![ultram0th - UltraM0th's TF Stories](https://64.media.tumblr.com/a854b6a82929e85a55efb0b4f31fd444/9b635457c5a66e5c-cf/s128x128u_c1/23ea4ff0752005612c3e08dd12ffd2de32b03bfa.jpg)
🔞Here's some stories and pics from around the Internet that involve TF, either made by others or myself. (If you see your work on here and would like it removed, please message me and I will do so immediately!) 🔞Asks/Requests are currently paused.
309 posts
Someone Snuck Some Growth Formula Into Daddy's Morning Coffee. He's A Little Annoyed That None Of His
![Someone Snuck Some Growth Formula Into Daddy's Morning Coffee. He's A Little Annoyed That None Of His](https://64.media.tumblr.com/f2f05b9bc93b686826ade63879887756/9087863a49e36c22-45/s540x810/ba64743e8d1458016cde4807c8859ea850618610.jpg)
Someone snuck some growth formula into Daddy's morning coffee. He's a little annoyed that none of his shirts fit anymore, but he'll get over it.
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More Posts from Ultram0th
I am fond of you Derek turning into a more muscular and/or hairy guy if that's the kind of request you were looking for? Love your stuff though regardless it's hot and well done.
![I Am Fond Of You Derek Turning Into A More Muscular And/or Hairy Guy If That's The Kind Of Request You](https://64.media.tumblr.com/57e975b9a3ec3130031fe14c3ece2115/f48e2012319a0611-da/s500x750/d7383b6e867c504ca39c320ec14e58884b456f88.jpg)
It all began the morning after Derek had assumed his new Alpha title. Stiles had slept over, cuddling up next to his boyfriend when he'd jolted up awake as soon as his hands had brushed up against something unfamiliar.
"What...?" he trailed off, his eyes wide at his boyfriend's chest that he usually used as a pillow.
"Hm?" Derek sleepily yawned, wondering what his smaller boyfriend was panicking about.
"Der," Stiles mused, "your chest. It's... really hairy."
The werewolf cocked his eyebrow up at his boyfriend, running a hand over his pecs. Sure enough, the werewolf's previously smooth chest was now covered with black hairs. They spread out over his pecs, running down across his stomach before connecting to his bush. The hairs curled and looked thick enough to where one might've guessed that Derek had always been rather hirsute. His pert nipples poked through the dusting of hairs, looking hard. Plus, Stiles hadn't noticed it initially, but Derek's square jaw was also covered by a thick beard that looked like it'd take weeks for a guy to grow... not just a few hours.
Derek's eyebrows knitted together as he ran his hands over his hairy chest, his heart starting to race. However, just as soon as the worry began to trickle in, it disappeared.
His face smoothed out and he yawned loudly, gently placing a hand on Stiles's head to pat it back down to his now hairy chest.
Stiles wanted to argue, confused over both his boyfriend's sudden change and different attitude. He knew that Derek should've been freaking out and wondering what was happening to him, but instead his boyfriend acted like everything was normal.
He tried to ignore it, but as Stiles rested his head back down onto Derek's chest, something about the way he had to crane his neck alerted the human to something else.
"Derek!" he gasped loudly, sitting back up and tearing the covers away from his boyfriend. "You're... bigger!"
His boyfriend had always had a pretty toned physique, but now it looked as if Derek's chiseled pecs were now significantly larger and much more plump than they should've been. Without the covers over him, Stiles could also see that it wasn't just Derek's chest that had grown larger. His boyfriend's arms seemed to have doubled in size, looking thick and powerful as he lied on the bed. Even his legs were larger, his quads pressing tightly together and shoving his bulge (which seemed to stretch out his underwear more than usual) out in front.
And of course, every single larger muscle was covered in dark, manly hair.
"Stiles," Derek groaned, going so far as to roll his eyes, "everything is fine. I feel fine, there's nothing to worry about--"
He was interrupted when his phone alarm beeped, letting him know that he had to get out of bed, making him frown.
With a groan, Derek rolled his hairy bulk out of bed, the frame squeaking much more than it usually did as he moved. His heavy footsteps thudded over towards the dresser. As he walked, Derek noted how odd it felt to have his thighs rolling over one another, and how awkward it was to have his muscular arms resting at a ninety degree angle atop his flaring lats.
Stiles watched in disbelief as Derek nonchalantly attempted to get dressed in his normal clothes.
"Damn," Derek growled as he examined himself in the mirror. With his new bulk, none of his clothes fit him anymore. He couldn't get any of his jeans up past his massive quads, having to throw on a large pair of sweats that used to be baggy on him. Now, the material was skintight, showing off his meaty glutes and enormous package in front. The t-shirt he'd grabbed barely wrapped around his torso, ending above his navel. It had torn significantly across his large muscletits, showing off the hairy cleavage that he now possessed. There were two large bumps on the front from where his larger, nubby nipples poked against the thin cotton.
Stiles watched as Derek paled in the mirror, his beard-framed mouth opening like he was about to voice his concerns, but again, Derek seemed to instantly relax. He shrugged his broadened shoulders.
"I think my clothes shrunk in the wash," he chuckled, gesturing down at his hairy muscles.
"Derek!" Stiles cried, throwing his hands up in the air. "It's not the wash, it's you! You've turned into a hairy bodybuilder!" As crazy (or crazier) as it seemed, Stiles could've sworn that he'd watched Derek's hairy pecs balloon out a few more inches in those few seconds.
Derek took one last look at himself in the mirror, seeing how large and imposing he looked with his incredibly large, round muscles and the thick, masculine hair that coated them. He couldn't help but smirk back at his shocked boyfriend, flexing a large, hairy bicep. As his massive muscle bulged to the size of a bowling ball, the tight sleeves of the t-shirt burst apart.
"I'm not a bodybuilder," Derek smiled at his boyfriend, giving him a playful wink. "I'm the Alpha."
Found this Part 2 of one of my old stories from my old Tumblr. Happy to have found it!
![Ryan Terry Prepares For The Bodybuilding Competition - Pt. 2](https://64.media.tumblr.com/519985635d8964bb0f29331cbd61e966/bd58789c8318c090-46/s500x750/94aeaf8f284303f2bccbfed670cbfec02dd08239.gif)
“Ryan Terry Prepares for the Bodybuilding Competition” - Pt. 2
Part One
– – –
Winner: Ryan can’t stop flirting with the other bodybuilders
Bodybuilder Ryan Terry stalked back onto the gym floor to finish his workout, feeling energized by the protein shake the gym employee had given him for free. His heart beat a little faster than it had been as soon as he was surrounded by his fellow bodybuilders, and he felt himself getting a little frisky.
Ryan decided to head towards a weight pile to work on some bicep curls. He caught his reflection in one of the gym mirrors, smiling when he saw how pumped up he looked. He’d packed on some serious muscle in preparation for tomorrow’s competition, looking bigger than ever.
He approached a vacant bench and started to bust out some reps, really getting into it as he grunted loudly with every rep he performed.
“Hey, Man,” he heard one of his fellow competitors greet him.
Ryan looked over his broad shoulder to see Derek Lunsford waddle over to start performing some bicep curls of his own. He was a friendly bodybuilder and he and Ryan were cordial with one another, often having small talk during workouts or behind the scenes at competitions.
Ryan smiled back and felt his heart start to race even more for some unknown reason. “Hey there…” he greeted back with a wide smile, “…Stud.”
Ryan jerked back and wondered why he’d just referred to Derek as a stud. Sure he was friendly with the other muscle man, but he’d never called him by such terms.
Luckily, Derek laughed it off as he took the empty bench next to him. “Thanks,” he chuckled. “I mean, I have been putting on some serious gains.” He flexed a large, bowling ball-sized bicep to illustrate his point. “I’m pretty sure I’m gonna come in first this year.”
Ryan Terry’s eyes bulged at the sheer expanse of Derek’s bicep. It was massive and oozed such masculine power. Best of all was that Derek had yet to shave his body, so it was covered in dark, manly hair.
Ryan meant to offer a genuine congratulatory comment on Derek’s progress, but as soon as he opened his mouth, he heard himself utter, “Damn Daddy, that’s some serious size you got there.” Again, Ryan winced at what he said, having absolutely no intent on saying anything like that. However, it was as if his mouth moved on its own accord without any thought on his end.
“Uh, right,” Derek mumbled, cocking his eyebrow at his buddy.
Ryan dropped his dumbbell and flexed his own massive bicep, rivaling Derek’s size. “I got some gains of my own though,” he smirked. “See this huge, sexy muscle right here?” He felt himself lean forward and seductively lick his huge muscle, maintaining eye contact with the shocked Derek. Ryan inwardly screamed at himself the entire time. He had no idea why he was acting the way he was right now, and although he could feel and hear everything he was doing, he had no control over it. It was as if he were a puppet and someone else was controlling him. Still, Ryan was horrified at his actions, tasting the saltiness of his sweat as he licked his bicep.
“Um,” Derek wondered aloud, “I think I’m good on arms.” He quickly stood up and hurried away from the weight pile, leaving a humiliated and confused Ryan in his wake.
“What the fuck was that?” Ryan hissed to himself, seemingly able to control his words when he was by himself. He’d never once flirted with a man like that before. The straight stud had never even been so outlandish with a woman. Yet, he’d brazenly licked his bicep like some muscled up stripper on stage. He rubbed at his face in a panic, trying to come up with a reasonable excuse for the weird way he’d just acted around Derek Lunsford. He put the dumbbells away and hurried off to the treadmill, figuring that a run would clear his head. Plus, he could just put in his headphones and ignore everyone else as he ran.
As he rushed towards the treadmills, Ryan was oblivious to the smiling gym employee who eagerly watched the scene unfold before him.
When he reached the treadmills, Ryan took the one on the far right. He got on and began to punch the buttons on the machine, starting to set it to a slow job to begin.
When he looked over at the occupied treadmill at his left, he saw bodybuilder Nick Walker running, trying to get some final cuts in before tomorrow’s competition. He was running without headphones, watching one of the TVs. As he ran, the man’s pecs bounced with every step, and since he was shirtless, Ryan got a full, uninterrupted view of the large muscle mounds.
Again, Ryan felt his heart speed up and even felt his cock start to twitch, further worrying him. He shook away his discomfort and smiled back at the other man when he grinned at him.
“How’s it goin’, Ryan?” Nick asked him.
Ryan felt his cock practically leap when the muscle man addressed him, which was thankfully concealed by his gym shorts. As soon as he felt his lips start to move, he was already pleading with himself to be quiet. However, such was not his luck.
“I’m doing great,” Ryan heard himself say animatedly. “I’ve been workin’ a lot on building up my muscle. Check it out!” He felt himself turn around and tug on the front of his shorts to make the material go tight against his large glutes, which he promptly flexed for Nick to see.
Despite Ryan screaming bloody murder inside his head, Nick laughed at him. “Yeah, pretty impressive,” he chuckled in a low, manly voice.
That sent a shiver down Ryan’s spine and his cock was now painfully hard, at full mast. “Well, if you think they’re impressive now,” he teased, “just wait ‘till you take a ride.” He glanced over his shoulder and gave the other man a playful wink. His stomach dropped when he saw Nick look uneasy and look away awkwardly.
“Uh, sure…” he mumbled.
Ryan, begging with himself to stop, turned forward to face the other bodybuilder. Despite his inner humiliation and horror over his uncontrollable actions, Ryan didn’t show any of it outwardly. His sexy smirk stayed glued onto his stubbled face. He felt himself puff out his chest, his nipples poking against his tight white tank top. His muscled arm reached upward and he began to playfully flick one of his hard nipples, sending electric shots of pleasure straight to his throbbing cock.
“If you’re unsure, then maybe I can convince you,” he heard himself purr, feeling his tongue flick out over his full lips at the end of his statement.
Nick just shook his head as he laughed uncomfortably, putting his earbuds in.
Ryan gave up on trying to run on the treadmill, opting to end his workout for the day. He rushed towards the locker room, his beefy hands clapped tightly over his mouth out of fear that his body would mutter something else flirtatiously, all the while, his hard cock bobbed in his shorts with every step.
I think my roommate is hot af, but he's a straight jock bro. Can you help me turn him into a power bottom with a big butt?
![I Think My Roommate Is Hot Af, But He's A Straight Jock Bro. Can You Help Me Turn Him Into A Power Bottom](https://64.media.tumblr.com/bb481f53873ae2c0cc75af49203ab6bb/ba3b91c849baa128-52/s640x960/0b20b92febd17773cb63cd2370e69efd0ac52ff6.jpg)
You and your roommate, Evan, were waiting in the hot tub for your dates to finish getting ready inside. Two guys in a hot tub... yeah, only it didn't go that way, much to your dismay.
Although you had a date inside, you lusted heavily for your roommate next to you. Evan was a great guy, a nice roommate, easy to live with, and he was incredibly attractive. An avid athlete, he had an impressive muscular build, which was clad in tight, blue swim trunks.
However, Evan was straight, and you were strictly a top. Therefore, you weren't compatible, unfortunately. But you still longed for the straight stud.
And your date could tell, as he noticed that your eyes kept traveling to your roommate all night. Therefore, as he stepped out of the hot tub to "freshen up", he muttered a little incantation under his breath-- a nice surprise for you.
"When they get back," Evan told you, running through his game plan, "I need you to bring up the fact that I used to wrestle in college..." The handsome stud winced, his voice trailing off as he felt something off.
"Everything good?" you asked him, noting how Evan's handsome face paled.
"Y-yeah," he muttered, wiggling around in his seat.
Your eyes widened when he saw that he was rock hard for some reason, his impressive seven inches tenting out his trunks noticeably. Evan blushed furiously, his heart starting to race in his muscled chest, confused as to why he was hard in a hot tub with another man.
Then the changes started.
You noticed that the legs of his swim trunks slowly began to pull upwards, getting shorter and shorter by the second. The material suctioned to his body until it morphed into a skimpy pair of speedos. It was so small that the front pouch barely contained his hard cock and balls, and the back was fully engulfed by his cheeks.
"What the fuck?!" Evan balked as he stood up in shock, grabbing at his new speedo in shock. "What the fuck am I wearing?"
You were just as confused, but you also couldn't help but think that Evan looked really hot in such a slutty speedo. But then you noticed his firm butt shudder as it began to push out from his back.
Evan gasped loudly as his butt inflated, growing rounder and much more bigger than it should've been. The cheeks nearly tripled in size as they ballooned outwards, jiggling wildly from every subtle movement. Whereas Evan had looked perfectly proportional with his sexy muscles, he now was incredibly bottom heavy with such a big bubble butt that jutted out from his lower back, nearly forming a perfect shelf.
Before the stud could panic over his big butt, his large bulge shuddered before beginning to dwindle in size.
You watched as the pouch of your roommate's new speedos grew smaller and smaller, until it began to look loose and baggy.
"What the fuck happened to me?!" Evan cried as he tore his new speedo away from him, his meaty new cheeks jiggling as they were freed. He looked like he had two basketballs attached to his lower back. His own eyes went wide as saw his now two inch microdick.
Despite yourself, you couldn't help but feel so turned on by looking at your altered roommate. Sure Evan was hot before, but he was even more attractive with his big butt and tiny dick: the perfect bottom.
Immediately, your own cock hardened.
Evan's panicked eyes darted over to you and he intended to plea for help, but after noticing your six-and-a-half inches tenting your trunks, his little nub throbbed and he feel a foreign desire deep within his massive booty. His eyebrows scrunched together as he wrestled with his newfound lust, his little cock leaking a small bead of precum as he stared at your much larger cock.
"Do you want this?" you teased, gesturing down at your tented trunks.
Evan gulped, wordlessly nodding as he eagerly fished your cock out and impaled himself onto it.
Your eyes rolled to the back of your head as Evan immediately took over, somehow aware of how to expertly wiggle his hips and clench his cheeks to milk your cock. As he fucked himself on your cock, his meaty pecs bounced with his thrusts. The whole time, he moaned loudly like the buttslut he now was. The two of you locked eyes, having enough wherewithal to know that something had definitely happened, but not able to bring yourselves to even want to try to fix it.
You placed your hands on his hips, stopping his movements as you came, unleashing your load deep inside of your roommate. Evan's tiny, untouched cock spurted out an embarrassingly small amount of cum. The formerly straight stud blushed when it softened and receded even more into his bush, looking like a barely visible nub.
"Don't worry about that tiny thing," you reassured him. "You're big where it matters."
To emphasize your point, you playfully gave his rotund booty a little smack, loving how Evan shuddered at the contact.
![Don't Know How To Swim? Don't Worry! This Hot Daddy's Big Pecs Will Act As A Flotation Device. Just Hold](https://64.media.tumblr.com/411dc6f1d5456af88e3fea6482676d9c/fd6f0ce42aeb562c-8b/s540x810/22b7032bec7e8a42a5ab5298d7a89f718556cc84.png)
Don't know how to swim? Don't worry! This hot daddy's big pecs will act as a flotation device. Just hold on tightly!
![In An Attempt To Look Bigger, Bobby Decided To Shrink His Head. His Squeaky Voice Took Some Getting Used](https://64.media.tumblr.com/6bdec3867bc50c4f29d74f300caf0231/b39273b9508fb0c1-58/s500x750/e9c2b1cd590c28000f063b0d177874f7c0f81230.png)
In an attempt to look bigger, Bobby decided to shrink his head. His squeaky voice took some getting used to, but he loves how huge his muscles look.