31 Days Of Derek Hale

31 Days of Derek Hale

Day 21: Centaur

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“Fuck!” Derek roared as he stormed into the yard, hands clenched into tight fists. 

The werewolf was irritated over having nearly lost control of his inner wolf, and nearly wolfing out in public. Derek and Stiles had been out on a simple dinner date, when stupid Jackson had to show up and be his usual douchey self. Normally, Derek was able to keep his lupine instincts in check; however, the second that stupid Jackson had placed his hand on a clearly annoyed Stiles’s shoulder, Derek had seen red. He’d shot out of his seat and had unleashed a fearsome snarl, even baring his massive werewolf fangs in the jerk’s direction.

It had managed to get Jackson to cut his crap, but the action had also accidentally caught the attention of other patrons in the restaurant, who’d only stared awkwardly/fearfully in Derek’s direction. The ceaseless staring had totally ruined the night, and Derek had dragged Stiles out of there early, much to his chagrin.

“Der!” Stiles called out after the stomping werewolf. “It’s fine, really!”

Derek was still seething. Sure he was irritated with Jackson, yet he was more so angry with himself and how his lack of self-control had ruined his date with Stiles. Thinking about it more only served to bring out an onslaught of more anger-inducing memories about how being a werewolf was a pain in Derek’s ass.

His jaw clenched, Derek just huffed in annoyance. “It’s not fine,” he pouted. “And this whole werewolf bullshit is something that’s just going to keep causing us trouble.”

Stiles frowned and placed a tender hand on his boyfriend’s shoulder.

“Sometimes,” Derek huffed, “I wish I wasn’t a werewolf.”

On cue, a streak of light flickered through the night sky as a shooting star bolted across.

Immediately, Derek flinched as he felt a warm travel throughout his body. The first thing he noticed was that his pants were starting to grow uncomfortably tight. 

“What the hell…?” Derek wondered aloud as he looked down at himself. HIs eyes went wide as saucers when he saw his altered bulge in the front of his pants. 

His normally proportional six inches had somehow elongated, creating what looked like Derek was stuffing a ripe grapefruit in his boxers. It was obscenely large, and between his thick thighs, Derek felt balls that had to be the size of lemons. Worse was that back of his pants felt as if they’s burst at any moment.

Looking over his broad shoulder, Derek gasped at the caricature of a butt that was attached to him. His perky cheeks had somehow managed to balloon out to a crazy size, pushing further out with each second.

In his panic, Derek ripped off his pants, his breath getting caught in his throat at what he saw.

Never being one lost for words, Stiles gasped out, “Holy crap, Der! You’ve got a horse cock!”

Derek’s cock had grown to at least fifteen inches, and it was nearly as thick of his beefy wrist. His balls had swollen up to resemble baseballs. The werewolf didn’t have time to focus on that as he felt his weight being yanked back due to the increasing size of his booty.

His legs stretched out longer, causing Derek to sprout up at least two more feet in height. All he could do was stare in disbelief at his changing body, his heart beat loudly in his muscled chest as he wondered what was happening to him. His throat went dry as he witnessed his toes fusing together, his nails hardening to form hooves. 

His butt grew so big that Derek stumble back and almost fell, but he was caught by something.

Stiles’s wordless gasp mirrored his own as he looked back and saw that he’d grown an extra set of legs to offset his elongated backside. Derek blushed at how he must’ve looked, having his regular-looking torso sitting atop a lower half that was stretched out with four legs needed to keep it upright.

Derek’s altered lower half began to itch as thick, black fur sprouted all over it, covering every inch. It was glossy and looked shiny underneath the moonlight. As a final touch, Derek winced when he felt his distended backside tingle as he sprouted a long tail that swished back and forth.

The warmth finally dissipated, and Derek also felt an odd calm inside of his head, like his inner wolf was finally silenced.

“What the fuck just happened?!” Derek panicked, taking an awkward step forward in his new body, his hooves clacking loudly on the ground as he struggled to get used to walking. As he moved, his huge cock dangled around freely, making his face crimson.

Stiles’s mouth was agape as he looked over his changed boyfriend. Derek’s long legs were thick with muscle, which flexed with animalistic power with every heavy step he took. “Der,” he gasped, “you’re a centaur!”

“A what?” Derek groaned, pinching his nose in irritation. “When I said that I didn’t want to be a werewolf anymore, that didn’t mean that I’d rather be a centaur instead! How the fuck am I supposed to hide this thing!?” He gestured at his horse ass and cock, which were humongous and definitely would prove to be difficult to keep from prying eyes.

Derek stopped and sniffed at the air, still maintaining a keen sense of smell. And a curious aroma was wafting off of Stiles in waves.

“R-really?” Derek asked incredulously.

Stiles bit down on his lower lip and shrugged. “I played a lot of fantasy RPGs, and always liked the centaur characters… like, a lot.”

Derek felt his shock slowly fade, and he couldn’t help but grin coyly at his boyfriend.”C’mere, I’ll give you a ride,” he chuckled.

Stiles eagerly took his hand and hopped up onto Derek’s new back, wrapping his arms around Derek’s human torso. 

Derek marveled at how weightless Stiles felt as he carried him, and he began to trot towards the house… his swaying horse cock getting harder and harder. He just hoped that Stiles knew some special stretching techniques.

31 Days of Derek Hale

Day 24: Cow

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Derek grimaced as he swallowed down the odd tasting protein shake. “That tastes weird,” he spat. “What’s in it?”

Theo shrugged his shoulders. “It’s a new recipe I’m trying out,” he answered, smirking slightly.

The werewolf and the chimera had been trying to work more closely together, for the sake of the two packs in Beacon Hills. As a result, Derek and Theo would try to be more cordial with one another. One such activity that the two pack leaders actually didn’t hate to do together was work out at the gym. There was a sort of playful rivalry that the two engaged in, always trying to out lift the other as they worked out, trying to get more gains.

Being an alpha werewolf, Derek easily out lifted Theo and his muscles were way larger by comparison. The chimera, on the other hand, tended to stick with a more toned physique, not allowing any of his jealousy to show on his smiling face.

Which was why he was all smiles as he offered Derek a drink of his own secret concoction. The mischievous chimera had fought hard to hide his triumphant grin as he’d watched Derek take a hesitant sip of the “protein shake”.

Derek still wiped at his mouth with disgust at the horrible shake that Theo had offered him. “Yeah, I think I’m gonna stick to my usual,” he huffed. “Thanks though.”

Again, Theo shrugged. “Suit yourself,” he happily hummed.

The two men went to starting their workouts, Theo keeping a careful eye on Derek.

Derek, oblivious to the chimera’s staring, went to the chest fly machine, racking up a ton of weight before performing reps. As he worked out, he noticed an odd tingling sensation in his pecs that wasn’t like the normal burn that he’d expected. Instead, this one felt almost electrifying and oddly… good. Really good.

Derek blushed slightly as his chest tingled, his nipples feeling as if they were hardwired directly to his cock. His cock started to stiffen up in his shorts, and as he continued to perform reps, Derek had to hold back a moan.

“Mmmm,” Derek moaned as he tried his best to keep his lips pursed. His blush deepened when he looked over and caught Theo staring.

The alpha werewolf quickly diverted his gaze and tried his best to continue his workout.

Derek was trying so hard to ignore the odd sensations emanating from his pecs that he hadn’t even registered the growing tightness of his shirt until he heard a loud rip echo throughout the nearly empty gym.

He let go of the weights, letting them bang loudly back to the machine. Cocking his eyebrow, Derek looked down at himself, gasping loudly at the large pecs attached to his chest.

“M-my pecs!” Derek stuttered out of shock. “They’re huge!”

Staring downward, Derek’s previously proportional pectorals had been wildly inflated. They jutted out dangerously from his chest, looking round and bulbous. It looked like someone had sliced a soccer ball in two, glueing both halves onto the werewolf’s hairy chest, looking incredibly out of place on his muscular body. Worse for Derek was that his nipples had even enlarged, growing thicker and protruding off of his massive chest like nubby fingers.

Derek blushed when he squirmed in his seat on the machine, feeling how much his chest bounced and jiggled. Oddly, his pecs felt so heavy and cumbersome, and when he moved, he felt an odd sensation of something sloshing deep inside of them.

Theo snickered as he looked the top-heavy alpha up and down. “I’d say so,” he teased. “Those are some serious udders you’ve got there, Derek.”

Derek shoved himself away from the pec fly machine and hurried towards the privacy of the locker room. As he moved, he noticed the arched back stance that he had to take in order to accommodate for his inflated pecs. This caused the enlarged mounds to be thrusted outwards and more into the open, being impossible to conceal. They bounced and jiggled with every step the frantic alpha took, that sloshing sensation growing in fervor.

When he reached the locker room and stared into the mirror, Derek paled at his warped reflection. His pecs and nipples were huge, easily out-shadowing the rest of his impressive musculature, every other body group looking like an afterthought. His jaw dropped, resting upon the cresting pecs that were pushed upwards and out.

Theo, a devilish smirk still plastered on his face, sauntered into the locker room. He crossed his toned arms over his proportional chest as he studied Derek. “They don’t look that bad, Derek,” he snickered. “Maybe we can get you a bra?”

The color gradually returned to Derek’s face as he turned red, slowly putting the pieces together. “You did this to me?” he accused, gesturing down at his massive chest.

“Duh,” Theo scoffed. “I grew tired of always being the small one, so I did some research and found that a really good growth formula contains alpha milk. Hence, all I needed to do was get you to produce some.”

“‘Alpha milk’?” Derek repeated, looking down hesitantly at his large pecs, frowning when he couldn’t anything past their bulbous size.

Theo walked over and didn’t give the alpha any warning before he reached around and grabbed Derek’s meaty pecs.

“Oohhh!” Derek couldn’t help but moan as his muscletits were fondled. Despite his panic and frustration over having his chest altered, he couldn’t ignore the surge of pleasure that rippled through him. In addition to increasing in size, his pectorals also drastically increased in sensitivity. Every touch from the other man’s hands lit up pleasure receptors that Derek had never had before. His knees buckled and his head rolled back as he was felt up. No amount of sex or playing with his cock could ever compare to the brilliant sensations on his chest, and deep down, Derek felt himself craving more.

Theo began to thumb Derek’s nubby nipples, and the werewolf felt as if he’d explode at any second. His heavy pecs lurched and he felt that sloshing inside of them grow even more; and Derek swore that his pectorals began to feel slightly larger.

Derek tensed up, shooting his load. However, instead of cumming, his nubby nipples squirted out a white substance. The pressure in his muscletits subsided the slightest bit, but Derek felt something else bubbling deep within him. He tried to swallow it down, but the alpha werewolf couldn’t help himself.

As his nipples leaked, Derek bellowed out a deep, “Moooo!”

He was so caught up in the feeling of pleasure that left tingles all over his skin, especially his burning nipples, that Derek didn’t even have time to feel humiliated over that fact that he’d mooed like a cow.

Meanwhile, Theo strategically placed his bottle under the alpha’s leaky nipples, collecting the milk that had seeped out. Placing the cap on it, he grinned widely.

“We’ll have to do this more often, Derek,” he happily said. “There’s a lot of guys out there who’d give a fortune for some alpha milk so that their muscles can grow bigger. And just think, it’s all thanks to you and these udders of yours.”

Derek wanted to be angry, to lash out at the chimera for turning his pecs into large muscletits. However, Theo reached out and teasingly flicked a protruding nipple, causing a lustful haze to cloud over Derek’s mind.

“Mooo!” Derek bellowed again, his giant pecs jiggling with want.

31 Days of Derek Hale

Day 11: Pup

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Derek wasn’t in control. He couldn’t help it.

The alpha werewolf had no clue what was happening, but the second he heard his husband, Stiles, walk in the front door after getting off from work, he felt a surge of excitement and utter jubilation. Of course Derek loved this husband and was always happy to see him, but this was to a new extreme— almost inhuman.

“I’m home!” Stiles called out.

At the sound of his husband’s voice, Derek’s heart raced and he dropped the TV remote and felt his body crash down to the floor on all fours. Before Derek could wonder what he was doing, he felt his limbs scamper out of the living room and towards the entryway. Inwardly, he panicked, unable to stop crawling on all fours or even stand up. Whenever he’d try to, he’d fall back down onto hands and knees, forced down like a dog.

The second his panicked eyes landed on Stiles, though, Derek’s trepidation vanished.

“Woof! Woof!” Derek cheerfully barked and he sprinted towards his husband. He rushed forward and managed to stand up on his feet— well, more like he leaned his top half against the smaller man, again, akin to how a dog jumps on their master. Unable to contain his joy at seeing the other man, Derek leaned forward and licked his husband’s face all over like a puppy.

“Derek, what are you…” Stiles trailed off, looking confused as the werewolf licked him. His eyebrows scrunched together, and his brain tried to tell him that something was wrong, that Derek was acting different. But as the excited mandog continued to give him kisses, he brushed the feeling away and couldn’t help but laugh.

At this sound, Derek couldn’t help but bellow out another, “Woof!” He blushed when he felt his bubblebutt jiggle a little as he wiggled his hips to and fro, almost as if he’d had a tail. Worse was that no matter how hard he tried to, he couldn’t seem to stop himself.

“Okay, Derek, down,” Stiles laughed as he gently pushed against the eager man.

Derek put all fours back down again at the command, his blush deepening. He had no idea what was happening, but a part of him hoped that Stiles could figure out a way to help him. He opened his mouth to ask for help.

“Hrrmm, woof!” Derek barked, his eyes widening. “Woof! Woof!” His deep voice sounded the same, but no matter how hard he tried, Derek couldn’t put together a sentence. His words were reduced to barks and yips, making him let out a loud whimper.

Stiles hung up his coat and turned back to the crawling Derek. “Aww,” he frowned exaggeratedly, “what is it, Der? You want some pets?”

Inwardly, Derek bristled at the way his husband was talking to him, as if he were his pet. However, his body perked up and he wiggled his hips even more. “Woof!” he excitedly barked, so into it that his hands lifted off the ground with the movement.

Letting out a chuckle, Stiles leaned down and scratched behind Derek’s ear.

The feeling was incredible and Derek leaned further into it, barely noticing the way his leg shook. The sensation of Stiles’s hands on him was intoxicating, and his canine mind craved more.

Derek flopped over onto the floor and rolled over onto his back, his arms hanging out awkwardly in front of himself as he presented his hairy chest to Stiles. Derek looked up at the other man expectantly, despite inwardly screaming at himself to stop.

“Aww, good boy!” Stiles cooed as he gave Derek a belly rub.

Instantly, Derek felt his cock rocket to life, slipping out of his boxers and bobbing out in the air. He couldn’t believe that he was acting like a dog, getting a belly rub from his husband. But he couldn’t deny that he loved it. Something about the way Stiles’s hands ran over his body was purely orgasmic, and the werewolf craved more. Every hairy crevice of his muscled chest was felt up by Stiles, and when his fingers ran over his hard nipples, Derek was pushed over the edge.

“Arroooo!” he howled as he came, his cum shooting up into the air and landing all over his pecs. He panted as he tried to catch his breath, feeling as if he’d just blown the largest load of his life.

Stiles stood up. “Let me change and then we’ll go for walkies,” he said as he walked up the stairs.

Alone, Derek’s mind finally cleared enough for him to start to freak out over what was happening to him. Gritting his teeth, he tried with all of his strength to stand up or speak, but it was futile. Finally giving up on that, he crawled around the downstairs, shocked to see that the house had changed. There was now a dog bowl in the kitchen with DEREK printed on it in large, blocky letters. Unable to help himself, Derek crawled over to the water bowl next to it and lapped up some water noisily, splashing liquid all over the hardwood floor in the process. He leaned up, his face cherry red at his actions, but his thirst satisfied at least. 

Scampering into the living room, Derek winced at the large dog bed in the corner along with the rubber toy in the shape of a bone.

The mere second Derek’s eyes landed on the toy, his heart began to race and he couldn’t help but rush over and happily take the toy in his mouth. Whenever he tightened his jaw on it, it let out a loud squeak, further exciting the werewolf even more. He happily thrashed his head around, loving the squeaking from his chew toy.

“Ready?” Stiles asked, interrupting his play time as he walked down the stairs in more comfortable clothes.

Derek cocked his head to the side and dropped the toy from his mouth, humiliated beyond belief. He was used to be a boasting and powerful alpha, not some damn puppy! Still, as Stiles grabbed the leash off the rack, Derek scampered forward eagerly.

“Sit,” Stiles said as he held out the black, studded collar. There was a small sliver tag on it that read out: Derek, along with Stiles’s phone number.

Derek immediately sat like a dog and straightened his torso as best as he could. He puffed out his chest muscles with pride, loving the way Stiles looked over him. He was such a good guard dog— no, wait, he didn’t mean that.

Stiles put the collar on Derek and attached the leash, barely having time to open up the door before Derek excitedly bolted out. 

The smell of the fresh air and the sounds of the birds chirping was so much, and Derek couldn’t help but whip his head around to take in all the senses. He loved the bright colors of the cars that zoomed by, and he couldn’t help but preen at how Stiles walked in line with him. Derek’s tongue happily lolled out of his mouth as he walked.

The two of them came to an intersection, and without thinking, Derek sat down and looked upwards at Stiles.

Stiles looked left and right before nodding down at Derek, the werewolf standing back up on all fours and continuing their walk.

“Good boy, Derek!” Stiles cooed. “That’s a such a good boy for waiting to cross the street!”

“Woof! Woof!” Derek happily barked, loving how Stiles praised him. He was such a good boy, especially for Stiles.

“Hey there, Stiles!” a voice enthusiastically echoed out.

Stiles looked away from Derek and then smiled lazily at Theo, who walked towards the two men. “Oh, hi Theo,” Stiles said, in a less cheery voice. This one almost sounded distrustful. 

At the sound of Stiles’s change of tone and the approaching of the other man, Derek couldn’t swallow down the fierce protectiveness that bubbled up in his chest. He stomped forward and puffed out his chest as best as he could, steeling his arms to make his muscles look even bigger.

“Grrr!” Derek growled at the other man, making him stop in his place.

Stiles tightened his grip on the leash and kept Derek back, offering Theo a meek smile. “Sorry, Theo,” he huffed, “Derek’s not great with other people yet. I’m still getting him trained.”

Derek stopped growling, but kept his large werewolf fangs bared threateningly at the other man.

Theo held his hands up and shook his head with a chuckle. “Well, I know you’ll get him trained well soon,” he sighed. “You always said that you wanted a dog…” With that he turned around and walked off, but Derek could’ve sworn that he’d heard him mutter “…I must’ve messed up the spell…”

Stiles and Derek finished their walk, the whole time Derek loving the quality time with his husband. Derek had loved smelling all of the flowers in their neighbors’ yards, he'd enjoyed the way Mrs. Hall ad given him a pat on the head (it’d been nothing like Stiles’s head pats though), and he’d chased a squirrel much to Stiles’s annoyance.

When they returned home, Stiles fed Derek some food, which Derek happily gobbled up. He followed Stiles around the house as he did little chores here and there until it was nighttime. 

“Time for bed, Der,” Stiles yawned, stretching his arms over his head and he sauntered towards the bedroom. He hopped in the bed and lied down.

Derek followed him into the room and spun around a few times before lying down on the dog bed that was at the foot of his bed. There was a rawhide there from earlier, and Derek chomped down, gnawing it with his large teeth. He was so happy. He had the best master in the whole world, he got a belly rub earlier, and he got to have walkies.

It couldn’t get any better than this—

“It’s kinda cold,” Stiles shivered. “You want up, Der?” He patted the mattress.

“Woof! Woof!” Derek excitedly barked as he jumped up onto the bed and scurried over to his Stiles, licking his face lovingly. 

“You’re such a good boy,” Stiles laughed as he scratched behind Derek’s ear.

“Woof!” Derek happily barked, his wide and toothy smile dominating his face.

31 Days of Derek Hale

Day 28: Inflation

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[Photo Source: https://www.deviantart.com/super-blimp/art/Man-of-Helium-910308194]

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— — —

“Stiles!? Stiles, where the hell are you?” Derek roared out as he scanned the large crowd for his boyfriend. 

The werewolf sighed as he pinched the bridge of his nose in irritation. Stiles had won some online comic book contest, giving him a trip for two to Metropolis for the Annual Superman Parade. At first, Derek hadn’t wanted to spend his weekend at some overcrowded city where a bunch of nerds would be talking nonstop about comics; however, when he’d seen the glee in Stiles’s eyes, Derek had immediately melted and had agreed to go.

At his boyfriend’s behest, Derek wore a tight Superman t-shirt that he’d bought at Wal-Mart on the clearance rack. Just right before the parade was due to start, Stiles had gotten distracted and ran off towards a pretzel stand, disappearing into the crowd.

For the past twenty minutes, Derek was shoving his way through the crowd, looking for his boyfriend. “Stiles!” he yelled out again. “Damn it, I swear I’m gonna put a bell on that guy…”

In his hast to find Stiles, Derek angrily stomped past a bald man dressed in a suit that seemed to be too nice for just attending a parade. The man looked over at the frantic werewolf, a smirk formed on his face.

“Looking for someone?” he asked Derek, putting on a nice tone. “Missing child?”

Derek froze, but then huffed in agitation. “Missing boyfriend,” he corrected begrudgingly. “He went off the pretzel stand and got lost in the crowd. He’s wearing a superhero costume…” His voice trailed off when he realized that his description wouldn’t help due to hundreds of other people on the street dressed up as comic book characters.

The bald man just nodded his head. “Yeah, it’d be rather difficult to locate a singular nerd out of a thousand,” he hummed. “I know a way you can spot him easier, though.”

Normally, Derek would prefer to work solo, yet he wasn’t too keen on having his boyfriend lost in an unfamiliar city. Hence, he nodded. “Sure,” he grunted. “That’d be great. Thank you.”

The bald man’s smile grew. “Follow me, please,” he said, turning around and leading Derek through the crowd. The two of them walked into a nearby, unmarked building and headed directly towards the elevator which had to be operated with a key that the bald man had.

The elevator led all the way to the rooftop of the building. Initially, Derek thought that this was a great idea since he would be able to look down over the side and scan the crowd for Stiles. However, when he stepped out of the elevator, he spotted an odd looking machine that resembled an oversized shop vacuum, complete with a large hose. Blinking lights decorated the front, and they flickered with a neon green aura to them.

“Um,” Derek mumbled, shrugging it away, “thanks again for your help, Mister, um…”

“Luthor,” the bald man introduced himself. “Dr. Lex Luthor.”

For a brief moment, Derek could’ve sworn that he’d heard that name from somewhere before, like from one of the movies that he and Stiles had watched together (or more apt, a movie that Stiles watched while Derek felt him up). The alpha shook his head, figuring that it must’ve just been a common name as he started to walk over towards the edge of the rooftop, his lupine eyes searching for his hyperactive boyfriend.

In the background, he could pick up the sounds of Dr. Luthor moving around and messing with something. He ignored it though, perking up once he saw a familiar figure hovering by one of the numerous shop stands.

“Stiles!” Derek called out. “Stay there and— mmpphh!”

Derek’s voice was cut off when Lex Luthor shoved the large hose into his mouth, a clicking sound ringing out as a strap in the back locked it in place. Derek immediately shoved the older man away from him, grabbing onto the hose with both hands and trying to pull it off his face. It was secured tightly in place, refusing to budge an inch. He could still breathe just fine, but his heart began to race in his chest as he wondered what the hell was going on.

“Grrr!” Derek growled, his words still obstructed, as he threateningly leaned towards Lex.

The bald guy just smirked. “Don’t try to fight it, Mr. Hale,” he said as he coyly walked back over to the large machine that the other end of the hose was attached to.

Derek cocked his eyebrow, wondering how this random stranger knew his name.

Dr. Luthor just snickered as he began to punch a few of the green buttons. “You honestly think your little boyfriend won that contest to come to Metropolis based on his talent alone?” he balked. “I mean, the guy submitted a handmade comic entitled Wolfman, and he not-so-subtly designed the hero after you.”

Derek’s broad shoulders fell, knowing that that did sound like something Stiles would do. Still, wanting to defend his boyfriend’s honor, Derek growled again and kept trying to tear the hose away from his mouth.

“So I had to rig the contest to make sure that the two of you would come to Metropolis so that I could test out my latest experiment on you!” Dr. Luthor explained, his voice quaking with excitement as his fingers furiously kept pressing the flickering buttons, a whirring beginning to sound out from the machine. “After all, if it works on an alpha werewolf, then it’s sure to work on Superman!”

Derek rolled his eyes at the insane-sounding bald man. Superman wasn’t real, he told himself; therefore, he was being attacked by some crazed comic book fan. Of course this would happen to him…

The whirring from the machine grew in intensity, growing louder and faster. It turned into a loud hum, mimicking the sound of a generator. 

“Hold on, Derek,” Dr. Luthor laughed. “You might feel a little… pressure.” He flipped a switch.

Derek winced as he felt a gust of air blow through the tube, coming out of the machine and going directly into his mouth, making his cheeks puff up from the action.

“Hmm?” Derek couldn’t help but ask in surprise. A number of different scenarios had ran through his head regarding what the machine would do, but just blowing air wasn’t one of them.

Dr. Luthor’s eyes began to light up with zeal. “It’s a success!” he practically cheered, going so far as to ball up his fists with joy. “Look!”

Derek scrunched up his brow in confusion before paling once a tingle rippled across his body, and a horrifying sensation began to creep up.

Steadily, Derek could feel his Superman shirt start become tighter as the air continued to blow into his mouth. In a panic, Derek looked down at himself, his eyes nearing bulging out of his skull as he saw a lump at his midsection where rigid abs should’ve been. The humming from the machine picked up, and Derek’s stomach pushed outwards, growing larger and much more rounder.

Derek frantically pressed his hands against his growing gut, as if he could stop its growth. However, not only did he feel it continue to get bigger, the werewolf was startled by the squeaky noises of rubber balloons sounding out. Worse was that the more he moved, the more the squeaky sounds rang out, as if Derek’s skin were now rubber, expanding as he grew larger and larger.

The growth wasn’t solely focused on his belly, Derek was horrified to discover. His pecs began to inflate too, rounding out as they ballooned out in front of him. With two audible boinks, his nipples poked out, pressing tightly against his straining t-shirt. His pant’s button ricocheted off as his butt began to bubble out, growing large and bulbous as it blew up with air from the mysterious machine.

Derek tried with much more gusto to tear the hose away from his face, but then his arms began to inflate. So much air was pumped into them that they grew inflexible, and Derek couldn’t maintain his grip on the hose. His arms were forced to hang out at his sides, akimbo. He furrowed his brow intently as he tried to move them, but all he could do was barely wiggly his hands as his entire body grew.

All of the muscles in Derek’s enlarged body looked overly inflated and out of proportion. They were ridiculously huge and round, making movement near impossible. Derek’s arms were stuck at his sides, and his thighs had grown so wide that they constantly pressed against one another, forcing him to stand with a wide stance. The whole time he struggled to move, the squeaking noises of balloons echoed out from his expanding form.

The growth even traveled south to Derek’s cock, pumping it up to incredible proportions. It lengthened out to almost a foot long, and thickened up to the girth of his normal-sized forearms. The amount of air in it forced it to stand straight out in front of the growing Derek, his balls blowing up to the size of softballs.

Dr. Luthor glanced at his expensive-looking watch before turning a dial on the machine. “As much as watching you turn into a helpless blimp, Derek,” he teased, “I’m on a really tight time crunch. Let’s hurry this up, shall we?”

The machine roared with power as it forced more air down the powerless werewolf’s throat.

Derek felt his muscular physique begin to falter as his body started to round out even more, taking on a more spherical appearance. His traps and pecs inflated to such enormous proportions that they ballooned up and swallowed Derek’s neck, making his head look hilariously tiny atop a round body. His torso inflated so much that it began to gradually grow over his limbs. His arms and legs seemingly sucked into his bulbous midsection, leaving the werewolf’s hands to flap around uselessly as he still futilely tried to tear the hose away from him. His stubby legs threw him off balance, and Derek felt himself fall onto his back. He was so full of air that he actually hovered in the air, floating weightlessly as he ballooned up. He could barely move, he was so big. And even if he could roll around, he was too light to even touch the ground, leaving the alpha one-hundred percent at the mercy of the mad scientist.

“Aaand, that should be good!” Dr. Luthor said as he shut off the machine.

The air stopped, and for a brief second, Derek was relieved that he wasn’t growing anymore. However, that relief was short-lived when he looked downward, his view of his body blocked by his hyperbolically inflated pecs that were so huge and round. Based on the large shadow he created, Derek estimated that he had to have grown to the size of one of the parade floats he’d seen on TV. His Superman t-shirt miraculously remained intact, making Derek look like an overinflated Superman.

Dr. Luthor walked forward and quickly tied ropes around Derek’s hands and feet, holding onto them so that the werewolf wouldn’t float away. He yanked one the ropes, causing Derek’s balloon-like body to jerk downwards enough so that the hose could be unlocked and removed from his face.

“Well, Mr. Hale, what do you think of your new body?” Dr. Luthor mocked, a sinister smirk on his cocky face. “If I may toot my horn, I’d say that I just created the biggest Superman parade float that Metropolis has ever seen!”

“You son of a bitch! You better turn me back!” Derek roared, blushing when he heard the squeaky sound of his voice. The air that had been pumped into him must’ve had large amounts of helium, making Derek sound like a chipmunk, made all the more ridiculous with his giant body.

“‘Turn you back’?” Dr. Luthor asked, looking genuinely confused before shrugging. “I’m not sure there is any going back, Mr. Hale. I mean, after all, you’ve stretched out way beyond any normal proportions so I really don’t think you’ll just bounce back, per se. Perhaps we could look into bulking you up so you can at least stay grounded with your new girth.”

Derek was stunned at what he heard. He was so caught up in the horrible news that he was potentially looking at a future as a giant blimp, that he’d barely noticed when Dr. Luthor tossed the long ropes down the edge of the building towards where some of his cronies were waiting. His crew grabbed the ropes and hurriedly walked into the parade, continuing down the street at the same pace as the rest of the performers.

“W-wait!” Derek cried, humiliated at the thought of his inflated form being paraded throughout the bustling city for all to see.

His enormous body was pulled out into the parade among the other floats, of which his size was in par with. Immediately, the werewolf’s sharp ears could pick up the gasps from the crowd as they looked up at his balloon-like body.

“Whoa!” a man shouted as he pointed upward .”Check out that over-inflated Superman! His belly is massive!”

“That’s a bit too big for Superman. That has to be some kinda fetish work, right?”

“Look at the size of that bubble butt!”

“He looks huge!”

The crowd erupted into thunderous laughter, many people pointing at Derek’s inflated body and making comments about the obscene size of his pecs, belly, or ass.

Derek’s face was cherry red as he blushed at the comments about his inflated body. It was hard to turn his head with almost no neck, but he could see his huge form in the reflection of the glass lining a skyscraper. 

Derek groaned at how large and round he looked. His gut was so spherical and enormous that it was definitely the center of his growth. Not to be outdone, his ass cheeks had blown up as well, protruding out into the air as he floated through the city, all of the parade-goers gawking at his round form. His head looked hilariously tiny as it sat in the middle of his torso, almost sinking into his inflated pecs which were capped with nubby, protruding nipples. The Superman icon on his t-shirt had stretched out over his larger chest, making him feel like some warped superhero as he helplessly floated through the city.

Derek tried desperately to grab onto the ropes to pull himself back down to the ground, but he was so rotund that all he could do was helpless wriggle his fingers and kick his feet. Dr. Luthor’s crew kept laughing wildly as they carried Derek throughout Metropolis, going so far as to even bring attention to his inflated form.

“Hey! Check out the massive new Superman float we got. A bit overfilled, isn’t it?” one of them giggled.

Derek’s face was crimson now as he was shown off.

“Derek?! What happened to you?!” he heard Stiles cry out among the crowd.

The werewolf slightly perked up and tried to look around for his boyfriend, but his pecs were so large that he couldn’t see anything past them. “Some freak turned me into a damn balloon!” he squeaked, wincing again at his silly voice.

Derek could hear Stiles’s feet hurry over towards him. The sounds of grunting echoed as a scuffle broke out, and Derek could feel himself being carried away from the parade at a little faster pace.

“I gotcha Der!” he heard Stiles say. “You’re actually surprisingly light…”

Derek couldn’t see thank to his inflated form, but Stiles had managed to snatch the ropes away from Lex Luthor’s cronies. He ran down the other block, carrying his parade float boyfriend away from the crowd so that they could figure out a way to fix him.

For a second, Derek breathed out a sigh of relief before something off in the distance caught his eye. “H-hey,” he squeaked, “something’s coming this way. A plane?”

Stiles looked up into the air, gasping loudly. “Holy shit, Der!” he exclaimed excitedly. “It’s Superman!”

“Of course it is…”

Sure enough, the flying object approached at lightening speed, stopping midair right in front of Derek’s inflated form. Despite how impossible it sounded (and crazier things had happened that day, clearly), Superman floated right in front of the werewolf. He looked just as he did on TV, yet Stiles swore that Superman and Derek shared a few facial features.

“Whoa there, Big Guy,” Superman whistled as he looked over Derek’s parade float body, “it’s looks like Lex Luthor used you as a guinea pig for one of his diabolical experiments.”

A twinge of anger sparked inside of Derek, knowing that it should’ve been Superman who’d been turned into a freakshow, not him. “Yeah…” was all that he could say in his helium-esque voice.

“Superman!” Stiles gushed down below on the ground. “I’m your biggest fan! I’ve read all of your comics and seen all of your movies! I have so many questions to ask you if you have any time at all!”

Superman just smiled warmly down at the talkative human. “Sure thing, Citizen,” he said in his deep voice that oozed manliness, and Derek couldn’t help but feel a little jealous. “But first, I think we should figure out what to do with your friend here.”

“Boyfriend,” Derek squeaked.

“Can you turn him back, Superman?” Stiles asked, his knuckles turning white from onto the ropes tightly.

Superman rubbed at his square, chiseled jaw in thought before crossing his big, but manageable, arms over his chest. “I think I have a better idea,” he admitted. “Something that could benefit everyone involved.”

Derek gulped loudly.

[Two Weeks Later]

“Everything’s all set!” Superman, disguised as Clark Kent, announced, beaming ear to ear.

“Are you ready, Der?” Stiles asked.

“Um, I guess so,” Derek stammered, his voice still sounding like helium.

“Well, the Halloween Parade’s starting, so let’s go!” Clark said as he pulled on the ropes and began walking among the crowd. 

Again, Derek was paraded throughout Metropolis, being the largest parade float on the block. This time, in preparation for the Halloween Parade, Superman had painted him head-to-toe orange, making him look like a massive pumpkin. Derek still blushed as all eyes were on his inflated form, but the inflated werewolf forced a nervous smile onto his face as he tried his best to wave an inflexible arm.

Superman’s great idea, since he had no idea how to turn Derek back to normal, was to just use the werewolf as Metropolis’s biggest parade float, opting to dressing him up to fit whatever parade it was supposed to be. For the Thanksgiving Parade next month, Superman had plans to dress up the inflated Derek as a large turkey.

Of course, it wasn’t Derek’s first choice. However, he couldn’t deny that a part of him liked to see Stiles happy attending parades on the regular, so he tried his best to swallow down his horror over his new life as an overinflated parade float, and tried his best to give in.

Derek smiled and waved to the crowd as best as he could, still blushing slightly as onlookers commented on how massive he looked.

31 Days of Derek Hale

Day 17: Nippleslüt

Info │ 01 │ 02 │ 03 │ 04 │ 05 │ 06 │ 07 │ 08 │ 09 │ 10 │ 11 │ 12 │ 13 │ 14 │ 15 │ 16 │ 17

Alpha Derek Hale was taking a shower, a little irritated that he was rock hard and his husband was working the nightshift. Normally whenever Derek got a little frisky, he was all too happy to rush over to Stiles and go to town. However, he was a little miffed that he was all cocked and loaded, yet he was stuck all by himself with just his hand.

“Damn it,” Derek growled as he pumped away at his throbbing cock, even using some of Stiles’s shampoo to help do the trick.

Still, jerking off just failed in comparison to actually fucking. 

Derek was about to just give up and turn the water to ice cold when he spotted an unknown blue vial in the shower. Picking it up, he eyed it and read out the chicken scratch writing on the label that read out Liquid Lust. 

“‘Liquid Lust’?” Derek scoffed, rolling his eyes at his husband’s antics. Stiles had been practicing potions with Deaton, and every so often, Derek would find remnants of his experiments around the house.

Still, wanting to encourage his lover’s endeavors, Derek opened the vial and sniffed at the concoction. It reeked of musk, making the alpha gag and flinch.

Unfortunately, Derek’s jerky movements caused him to lose grip of the tiny vial in the shower, leading it to falling out of his grasp.

“Fuck!” Derek huffed as the smelly liquid fell out of the bottle and landed all over his hairy chest. It splattered across his pectorals, seemingly absorbing straight into his skin. The musky aroma clinging to Derek like it was emanating from him directly.

Immediately, Derek felt his nipples go hard. The little nips perked up before actually stretching out and elongating, inflating until they were large and nubby, looking like a pair of thumbs attached to his chest.

“What the hell?” Derek gasped as he looked down at his altered nipples. He tentatively reached up with one of his hands to prod at them. “What kind of potion is this— OOoohhhh!”

Merely grazing his fingers against his enlarged nipples sent a ripple of pleasure throughout Derek, his voice breaking out into a moan as his knees buckled. His cock throbbed even more, leaking precum. It was like a surge of pleasure never felt before. No amount of sex or jerking off had ever felt nearly as good as just touching his nipple just had.

“Wha-what the fuck is going on?” Derek panted, his meaty, hairy pecs heaving up and down as he struggled to catch his breath. His nipples seemed to burn with want, their own hardness competing with his cock’s, demanding attention from the alpha.

Almost unable to control himself, Derek reached up with both hands, running his thumbs over his hard nubs.

“Uuugghhh!” he squealed, his head rolling back as he toyed with his chest. The pleasure was mind-numbing, and Derek was helpless to do anything besides rub his nipples.

This soon turned to him grabbing a strong hold of both of them with his hands, lightly tugging on his huge nipples. It felt as if Derek had two cocks on his chest, his ignored dick bobbing uselessly between his meaty thighs as he pinched his big nips.

“Oohh fuuuck,” Derek bellowed out, the normally silent guy unable to stop moaning loudly, his deep voice echoing throughout the bathroom. “Holy shit, that feels so good— UUGHHH!”

Derek nearly shrieked as he came, his cock erupting and spewing out globs of cum that splattered against the linoleum in the shower. Basking in the post-orgasmic bliss, the werewolf felt as if he’d just shot the largest load of his life. He couldn’t help but chuckle in disbelief as he tried to catch his breath.

“Holy shit,” he breathed, rinsing away his cum off the walls. His nipples remained perky and hard, and after masturbating by tugging on them once more, Derek finished his shower and toweled off.

He wiped the steam away from the mirror and frowned when he saw that his nipples were still huge and hard. They poked noticeably off his chest, looking ridiculous on his muscular, alpha male frame.

“Um, maybe this’ll wear off in the morning?” he guessed as he glanced at the vial of the liquid lust, finding no other information about it on the bottle. 

Derek stumbled over to his bedroom, biting down on his lower lip at the shiver that traveled down his spine as the cool air from the A/C blew over his hairy chest, caressing his hard nipples. Just that light sensation was enough to make his cock begin to stir back to life, but he tried to ignore it.

He walked over to his shirt to try to cover his chest, but that proved to be another problem.

“Uuughh!” Derek moaned out again as soon as he tugged his shirt on. His nipples poked against the fabric like crazy, and just the cotton running over the nubs was enough to cause his cock to go erect and shoot out cum.

Derek had to rip the shirt away off of him, panting as he gained a reprieve for his sensitive chest. “What the fuck’s happening to me?” he gasped, his nipples almost simmering in the air as they begged for his attention some more.

That night Derek barely got any sleep at all. He would try to lie down on his back, but whenever the covers brushed up against his hard nipples, he’d go rock hard and have to tug on his nips to ease his horniness. Whenever he tried to lie on his front, it led to the alpha uncontrollably squirming against the mattress, moaning loudly as he ground his chest against the hard mattress, loving how it felt to rub his nipples against it, but also humiliated over what a huge nippleslut he was turning into.

“What the fuck am I supposed to do with these?!” he roared in frustration, looking down at his big nipples. 

When morning came, Derek was slightly relieved to hear the front door opening, meaning that Stiles had come home.

Derek leapt out of the cum-covered bed and raced downstairs to his husband, eager for some answers.

“Hey, Der— what happened to your nipples?” a tired-looking Stiles asked from the entryway once he saw the large nubs attached his husband’s muscled chest.

Derek gestured down at his nubby nipples with a shaky hand. “I accidentally spilt some of that liquid lust potion of yours on them, and now they’re— this! And they’re super sensitive!” he growled, his cock already starting to twitch at the mere thought of playing with his chest again.

Stiles’s eyes widened. “You messed with my potion?” he gasped in shock. “That was just a test. I don’t know if there’s a cure for it.”

Derek paled. “So I’m stuck like this?” he asked, looking down at his hard and sensitive nipples, imagining a life where he’d have to walk around constantly shirtless with his massive nubs on display. They’re so sensitive that he seriously doubted that he’d ever be able to get off again without someone playing with his nipples.

Stiles frowned for a moment before offering a meek smile. “If it helps,” he said, slowly reaching up, “I could play with them, if you’d like?”

He reached up and ran his thumb over one of the nubby nipples, and Derek instantly swooned.

“Ooohhh,” he moaned, his cock going straight to attention. “P-please, play with them some more.” He leaned forward and shoved his chest towards Stiles, looking forward to spending the day having Stiles play with his enlarged nipples, the nubs already tingling with anticipation.

31 Days of Derek Hale

Day 23: Ghost Possession

Info │ 01 │ 02 │ 03 │ 04 │ 05 │ 06 │ 07 │ 08 │ 09 │ 10 │ 11 │ 12 │ 13 │ 14 │ 15 │ 16 │ 17 │ 18 │ 19 │ 20 │ 21 │ 22 │ 23

Despite being a werewolf, Derek didn’t believe in ghosts. In his opinion, they were the cheap product of Hollywood trying to advertise uncreative horror films. He would scoff at the young adults who’d dared one another to sneak into McFadden Manor, only to hear them swear up and down that they’d seen a ghost. Lies, Derek figured.

Still, when Stiles had made up his mind to investigate the ghost stories surrounding McFadden Manor for Halloween, Derek had instantly jumped at the chance to tag along in an attempt to look brave and woo the hyperactive human. 

Unfortunately, Derek couldn’t hide the grimace as he walked through the deserted McFadden Manor. The abandoned mansion was the center of numerous spooky, Halloween-themed tales— all of them focusing on a mischievous trio of ghosts who liked to mess with unsuspecting people. The wide smile on Stiles’s face deeply contrasted with Derek’s scowl.

He eagerly held up an ancient-looking camera. “We should split up and cover more ground,” he said. “I’ll go down towards the garden while you inspect the bedrooms. Radio me if you see anything.” He shoved a large, dinosaur era walkie talkie towards the werewolf.

“I can just text you…” Derek muttered, studying the heavy tech in his hands.

“Thanks for coming with me again, Der,” Stiles said, offering the usually grumpy werewolf a sincere smile, making the alpha’s heart flutter in his chest.

In response, Derek puffed out his muscular chest with pride, his pecs pressing teasingly against his thin, white t-shirt. “S’no problem,” he grunted, trying to play it cool, but he could feel his cheeks grow hot as he blushed. Plus, he couldn’t help but crunch his stomach to make his abs pop against his shirt too, his muscular bod being his best form of flirting since he wasn’t really good at wooing orally.

Stiles happily ran down one of the dark hallways towards his destination, Derek not-so-subtly watching his perky butt as it disappeared.

“Damn,” Derek admired before frowning at the sight of the decrepit mansion. “Damn it.”

Frowning again, he shrugged his broad shoulders and lumbered throughout the dark, cobweb-filled halls. To humor himself, Derek sniffed at the air, smelling nothing in the air except for dust and rats. He rolled his eyes at himself participating in this foolish activity, yet, he forced himself to focus on the endgame: Stiles and him getting together… and then heatedly fucking in his Camaro.

That last thought put a little more pep in Derek’s steps as he explored the empty rooms in the mansion.

*Thud!

Derek tensed up at the sound that echoed out from one of the bedrooms. Following the source, Derek entered a room near the end of the hallway. The room turned out to be a bathroom, the rusty toilet giving it away. There was a dust-covered sink with a dirty mirror near the entryway, and in the far end was a standing tub with a yellow curtain closed over it.

Derek cocked his eyebrow in confusion over the fact that the water seemed to be running in the tub, steam even billowing out from the curtain.

“What the hell?” Derek wondered aloud, knowing that there was no way this house was occupied given its dilapidated state. Still, the running water left the werewolf deeply confused. He grabbed the edge of the shower curtain and ripped it to the side.

Inside of the tub was a portly bluish figure that was slightly transparent. Looking like a caricature ripped out of a cartoon, the ghost had a little tail that seemingly phased in and out of existence as the creature showered. When it noticed that it was being watched, the ghostly figure looked over at Derek and gasped, covering its lower half with its hands… despite there being really nothing to see.

“Do you mind?” the ghost scoffed.

Derek was stunned silent for a moment, his eyes wide as he stared at an actual ghost that was floating before him. “Holy shit,” he finally breathed. “You’re a fuckin’ ghost!”

The ghost exaggeratedly rolled its eyes at Derek. “No shit,” it huffed in a baritone-filled voice that only emphasized its rotund girth. A sly grin formed on its translucent face and its eyes sparkled. “You know, most fleshies tend to avoid this place because of me and my brothers, but here you are.” He sniffed at the air, his smile growing wider. “A werewolf?”

Derek flinched and took a cautious step back.

The ghost continued. “We don’t get a lot of your kind here,” he chuckled. “Your bodies tend to be a little more sturdy. This should be fun!”

The ghost lurched forward at lightening speed, much faster than Derek’s werewolf instincts could react. Since his jaw was still hanging low in shock, the ghost aimed right for the alpha’s agape mouth. 

Derek felt his mouth being stretched to the limit as the ghost squeezed himself inside of him. It was a difficult sensation to describe. Thanks to the ghost’s vapor-like body, it felt as if there was a gust of air that was keeping Derek’s jaw thrusted down as it shoved itself in. Cartoonish stretching noises, like rubber, sounded out as the ghost entered the werewolf. Derek felt himself getting fuller and fuller, feeling as if he’d just eaten a multi-course meal and was stuffed to the brim.

With a simple pop, the ghost finished his entrance and successfully squeezed his rotund body deep inside of Derek.

The werewolf felt full, his stomach and even lower end of his throat feeling as if there was a thick soup trapped in it. Derek stumbled around on shaky feet, trying to piece together what had just happened. The ghost squirmed a little as he settled in under Derek’s skin, the werewolf wincing at the sensation. 

“Damn, I can’t believe that worked!” Derek heard himself exclaim. “I usually have trouble fitting inside tiny bodies.”

Tiny? Derek balked.

Derek’s tingling limbs appeared out of his control, and the more Derek tried his best to strain and walk on his own accord, the more horrified the werewolf grew as it dawned on him that he wasn’t in control of his body. He even attempted to open up his mouth and demand that the ghost leave his body, but he couldn’t even do that— instead, Derek was more so a passenger inside of his own body. He could still experience every sense, smelling and feeling everything around himself, but he couldn’t move or speak on his own.

He felt his legs propel him forward, turning around to look into the mirror. Derek bristled at his own reflection which only smiled back at him, his smile eerily similar to that of the ghost’s.

What the fuck are you doing to me?! Derek roared on the inside. Get the fuck out!

The ghost only shook Derek’s head mockingly. “No way,” he said, making Derek’s body and voice say it on his behalf. “I kinda miss having a body so I’m gonna hang onto yours for a bit. The name’s Fatso, by the way.”

That’s a stupid name.

The ghost shrugged. “And this is a stupid body,” he countered, exploring Derek’s body, running his hands over it. Derek could feel every touch, unable to stop feeling himself up. “There’s barely any room inside of here. Let’s fix that.”

Derek screamed on the inside as he witnessed his stomach shudder before it expanded outwards. His gut grew in size and it rounded out as Fatso forced it to bubble out. Derek’s chiseled abs disappeared as a thick layer of fat appeared over them, going from firm to large and jiggly. It grew bigger and bigger, becoming huge and bulbous as it jutted far out in front of Derek, looking as if he’d swallowed a yoga ball instead of a ghost. To add to the inflation, even Derek’s pecs packed on some fat. They lost some of their tone as they grew larger and saggier, resting atop his enormous belly. There was still some traces of Derek’s large muscles underneath his new girth, but instead of looking like he lived in a gym, he looked more like some ex-jock who was in the middle of a perpetual bulking phase.

What the fuck did you do to me?! Derek roared on the inside, wincing as he examined his new body in the mirror. He must’ve gained well over fifty pounds, with most of it centered on his new gut. His mysterious growth had torn his t-shirt to shreds, forcing him to see all of his girth at once. Despite looking hard and solid, Derek winced at the way his gut hung over his jeans, sagging slightly.

Fatso mock-frowned. “Don’t be like that,” he taunted, putting both of his hands on the sides of Derek’s new belly and giving it a playful shake, causing it to bounce wildly. “I think you look much better with some more meat on our bones. Now there’s some food in the kitchen that we can eat.”

Eat? You mean you want me to get even fatter? Derek protested, unable to prevent his body from waddling out of the bathroom and down the hallway. His thicker thighs rolled over one another as he moved, and his rotund belly stuck so far out in front of himself that he couldn’t even see his feet. He inwardly flinched every time his foot thudded against the hardwood floor, sending a ripple through his belly and pecs.

Fatso forced Derek into the kitchen, where he made him lumber towards the fridge. Derek was surprised that when it opened, it was stocked full of food that looked like it’d just been bought earlier that day as opposed to sitting for years untouched.

Derek felt his arms lurch forward, grabbing fistfuls of various treats and snacks. 

“The only downside to being a ghost is that you can’t eat a lot of food,” Fatso lamented. “But the good thing about possessing a werewolf fleshie is that you can gorge on tons and tons of junk food. Much, much more than a human can!”

No! Wait! Derek pleaded.

His pleas fell on deaf ears as Fatso eagerly shoved loads of food into Derek’s mouth, moaning loudly as he tasted all sorts of flavors. Salty, sweet, savory— all kinds of different foods were shoved down Derek’s eager throat, none of them low-calorie.

The entire time, the werewolf inwardly begged Fatso to stop gorging on so much junk food. However, the ghost was paying no attention to him, moaning loudly as he devoured everything in the fridge.

In the center of the fridge was a delicious looking, three-tiered cake with bright pink frosting. Derek could feel his mouth salivating as his eyes honed in on the monstrous dessert. 

Before Derek could uselessly plead with Fatso again, his hands grabbed at the cake as he greedily gobbled it down. All he could taste was the sugary frosting and the chocolate center of the cake, grimacing at the sweetness, yet Fatso loved it.

Derek inwardly froze when he felt something horrible: his pants felt like they were getting tighter.

It was hard to tell since Fatso controlled his line of sight, but Derek could barely make out his gut growing more and more into his field of vision. It didn’t take long for the werewolf to put two and two together to figure out that, thanks to Fatso’s overeating, he was getting even bigger.

His big belly was starting to jut even further away from his torso as it packed on even more size from the delectable cake. His pecs felt heavier as they grew in size, his nipples even stretching out from the sheer expanse of his enlarged chest. Love handles formed and drooped slightly over the edges of Derek’s pants, which felt painfully tight by now.

Pop!

The button on Derek’s pants finally gave out, ricocheting off and landing on the floor. Derek felt a sense of relief as he continued to fill out, his ass puffing out as his cheeks ballooned out and became large and squishy. To account for his larger rear, Derek could even feel his thighs starting to push closer together as they blew up. As Fatso continued to eat, Derek’s body went from bulky to chunky linebacker status, looking incredibly large as if two of him were shoved together into one body.

Fatso fit the last few bits of the cake into his mouth, swallowing it down loudly and straightening back up. He patted his large gut, satisfied, before letting out a loud burp.

“I always gotta get a big cake before every Halloween thanks to silly guys like you who want to come play detective,” he smiled, rubbing his hand up and down his distended belly. “This was nice. See ya next year?”

Derek let out another loud belch, this one accompanied by a flash of blue as Fatso left his body to fly somewhere else in the manor.

Finally in control of his body, Derek gasped loudly as he ran his shaky hands all over his enlarged form. For some strange reason, even with Fatso gone, Derek was left with his added weight, looking massive and round. He took an awkward step forward, blushing as his entire body seemed to jiggle. He couldn’t see anything past his large belly which definitely wouldn’t fit in any of his clothes anymore.

“Damn it,” Derek huffed, giving his gut a tentative poke. “I have to do so many crunches to get this down to size…” He trailed off when his stomach growled, a deep hunger taking over him.

“Hey, Der,” Stiles called out, his footsteps approaching, “still no sign of any ghosts. I’m starting to think that they’re just stories.” Stiles froze when he reached the kitchen, his eyes nearly falling out of his head at the sight of the fatter Derek.

“Um,” Derek blushed, scratching the back of his head nervously, “I think I found a ghost—” He paused when Stiles stepped forward and placed a soft hand on his rotund belly, rubbing it up and down.

A smile forming on his face, Stiles couldn’t help but look up at the large werewolf. “Do you like belly rubs?” he asked, playfully rubbing Derek’s gut.

Although he couldn’t see it thanks to his big gut blocking his view, Derek could feel his cock rocket to attention, already oozing as Stiles gave him a belly rub. “Y-yeah,” he breathed. He blushed again as his stomach growled a second time.

“Big boy’s hungry?” Stiles teased.

Derek just eagerly nodded, looking forward to eating cake and getting more belly rubs from Stiles. 

All in all, it turned out to be the best Halloween of Derek’s life.