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line 'em up and measure ↳ lo'ak sully x male!human!reader

content warnings | smut ( mdni ), characters are aged up, brief description of wounds, slight intoxication, mutual masturbation, literal dick measuring contest, xenophilia ( alien biology ), dirty talk, praise

word count: 3995

notes | this was originally supposed to be for the last day of @eywaite and @tallulah477 romancing pandora event, but life got in the way. still, i couldn't get this out of my head so please enjoy this now !

na'vi dictionary | narlor — beautiful ( visually )

It was stupid—absolutely fucking insane, really—the situation you’ve planted yourself in. You knew you were a trespasser, not looked upon with any grace by Eywa on this exomoon but fuck, this must be some kind of sick joke.

“Dude, my dick is definitely nicer than yours.” Lo’ak’s cheeks are flushed with alcohol, grin toothy and shit-eating as his knee bumps yours.

You’d come across the Omatikaya purely by chance—a lone xenobotanist presumed dead after the tragic and fiery crash of your research team’s buggy in the depths of Pandora’s forests. You’d been warned about the local indigenous population, of course, and had been explicitly told your group was not important enough to risk more lives should you fuck up this exploration.

No one was looking for you, and you were alone on an alien planet with nothing but a scalpel and a faulty research tablet.

You’d wandered for hours, bleeding and disoriented, ears ringing with the impact of your buggy into the tree and heart pounding in fear at the inescapable situation you were now in. You were certain that you were smaller than anything in this forest, and that your sluggishly bleeding wounds and pounding headache would soon make you easy prey for whatever roamed in these woods.

You’d thought the time had finally come as you gasped against a tree for air, vision blurring with pain as your legs shook with the exertion to keep you upright. The air was rife with beastly screeching, the sound so high-pitched you thought briefly that this might be what death sounds like. The deafening flapping of giant wings had you scrambling to the forest floor, using the last of your strength to move pitifully away from the gnashing jaws of the creature who landed in front of you.

You were able to catch a glimpse of worried golden eyes and a lean blue frame that towered over you before the world slipped into inky blackness.

You’d learned afterwards that the Omatikaya did routine patrols in the areas known to the RDA, scheduled bouts of precautionary scouting should the Earth’s military ever stray too far from their boundaries. Well, you’d strayed a lot, apparently.

The man who’d saved you had carried you in a princess hold before the chief, his strong arm holding up your back and looped under your bent knees. It should’ve been embarrassing, you thought, a grown man having to be carried like a ragdoll by a stranger who was bargaining for your life to be saved. Then again, you didn’t exactly have time to worry about how tough you looked when you were on the verge of slipping unconscious again.

It had taken over a week in the medical care of the nearby human outpost before you were on your feet again, body weak from dehydration and healing minor fractures. The man who saved you, Lo’ak, came to check on you regularly, asking questions about your life and your intentions—how you’d wandered into the Omaticaya borders, why you were traveling in the forest, if you had any trackers on you, if anyone was following you.

After several days of him poking and prodding at you with questions, he returned with a much more intimidating man at his back—The chief, Jake Sully, adorned in ornate feathered regalia and a stern expression.

You knew you were best off telling the truth—you were a researcher with many injuries, nowhere else to go, and of no harm to any of the People. You’d even offered to leave once you healed, return to the RDA encampment with tight lips and fake amnesia, though Jake Sully had quickly brushed that off. It was in the People’s best interest that the RDA never knew you came in contact with them, and the only way you could do that was by never returning.

You were met with a mix of fear and anger from the local population. You were an intruder, an unwanted reminder of just how closely war knocked at their doorstep. It would’ve been easy to feel isolated, a bird without a nest.

Except you were surrounded with the most incredible flora and fauna you had ever laid your eyes on, the lands near the village so much more rife with life than the secluded bases of the RDA. The scientists at the outpost just outside the village welcomed you eagerly, sharing their notes and knowledge and living space with open arms. Then, of course, there was Lo’ak.

Lo’ak was a friend, one of the few that you’d acquired in the months since the crash. Turns out, one of his best friends was a human boy who’d grown up in the labs outside the Na’vi encampments, Spider, so he was neither scared nor angry with you. He was mostly curious, poking and prodding you with questions about Earth and showing you hidden wonders of the Forest when he got a rare day off.

He was also damn beautiful—tall and indigo-skinned, with lean muscles and swirling tattoos over the length of his strong arms and the curve of his ribs. You would be able to get over your little infatuation with some ease, you’d met plenty of good-looking people in your life, except he wasn’t just beautiful. He was fucking kind too, and it drove you nuts. 

So yes, Lo’ak was beautiful, funny and kind. He made you feel safe and wanted in a world that wanted to kill you at every turn, and he did it with the most endearingly toothy smile you’d ever seen.

He was also the chief’s son, which made him explicitly off-limits even if you did have any chance in any multiverse of getting to be with him. Which was exactly why you shouldn’t be in this situation right now, lazing together on a couch that is far too small for the two of you, passing a leather flask of pxir that was quickly emptying.

You must have been more drunk than you thought, letting the rogue idea slip between your teeth. It was supposed to be a joke, really—a dumb quip about how much you missed getting dicked down back on Earth. Your options were extremely limited, even more than they had been in the RDA outpost. At least over there there had been some sexually repressed military guys to get it on with. Here, everyone was either decades your senior, or definitely not your type.

“You just need to get some Na’vi cock. It’ll make you forget all about whatever puny action you were getting on Earth, bro.” Lo’ak laughed

 You were two young men, tipsy and comfortable with one another, it was completely natural to talk about sex. You knew that the Na’vi were extremely comfortable with sex, seeing it as a connection between life forms, something natural and beautiful. Plus, humans were inherently curious, not to mention repressed and hormonal. You figured that sexual experimentation between the two species was something nearly inevitable.

Still, it made you hot beneath the collar, having Lo’ak’s eyes so keen on you with hazy comfort as he suggests you get down and dirty with a Na’vi. With someone like him.

“Hey, watch how you talk about human cock. I’ve still got one, dude.” You scoff, taking another deep swig of the bitter alcohol. It’s always been so easy this way, hiding your discomfort behind sarcasm and dumb jokes. “Besides, it can’t be all that different.”

“Dude, my dick is definitely nicer than yours.”

It should be insulting. It is insulting, you tell yourself. That’s why your cheeks flush so devastatingly red, definitely. “Oh, fuck you, pretty boy. If that’s what you tell yourself to sleep at night, go ahead.”

“Well, there’s one way to find out.” Lo’ak’s eyes glisten with amusement, obviously reveling in the dumbstruck look on your face.

That was another thing you’d come to love about Lo’ak. He was always competitive, even over the stupidest things, even with stuff that will get him smacked or killed. He jumps at any opportunity to prove to himself and others that he was capable and brave. It usually made your heart flutter with admiration, now it just puts you on edge.

“You’re not seriously suggesting to whip it out, are you?” You chuckle

“What, you’re scared I might be right?” He goads.You’re about to deny him, about to insist you’ve had too much to drink when you’re barely even feeling a buzz so you can  

Except that Lo’ak is already pulling his hips up from the couch, moving to sit up on the arm of the seat so he can untie his loincloth. His muscled torso stretches while he extends his body, black swirling lines of tattoos he acquired with the reef tribes etched down his ribs and tapering just at the edge of the v-line leading into his bottoms.

It’s completely stupid and irrational. It’s definitely something that could get you smacked or even exiled if people found out. Hell, Lo’ak could never talk to you again if he knew what dirty things were running through your mind. It’s also the start of every stupid, dirty fantasy you’ve been unable to repress for months.

If you were a stronger man, you’d get up and leave. Except, you’re not.

“Alright, pretty boy. Put your money where your mouth is.”

Lo’ak’s grin is a little smaller than before, still confident but edged with something that seems bashful, his tail swinging leisurely behind him. It only takes a few tugs of his practiced fingers for the leather of his loincloth to loosen, then fall to the tiled ground of your room.

You feel ashamed for looking, even though that was the whole point of this stupid competition, if it could even be called that. You try to keep your face neutral as Lo’ak lighty spreads his legs, brows furrowing a bit. The apex of Lo’ak’s legs resembles more of a human female’s anatomy than anything. His skin is smooth, hairless just as the rest of his body, the darker stripes on his skin narrowing to a slit in his crotch

You swallow heavily, tucking one of your legs up to your chest to hopefully obscure the growing bulge in your shorts. You try to keep your voice even, teasing, even as it shakes. “From where I’m standing, looks like there’s nothing to compare, bro.”

“Fuck off, just give me a second.” Lo’ak mutters, cheeks warm as he brings a hand between his own legs. “Only humans are dumb enough to have their shit hanging out all the damn time.”

You’re glad to see a flush on Lo’ak’s cheeks, hear the gruff rasp of his voice. It’s comforting to know you’re not the only one a little affected, and you feel a bit of hope blossom inside your chest.

His fingers move between his legs, parting the slit with soft movements, his fingers shining with slick between his legs as he coaxes the opening open. He keeps his lips tight, chest moving with heavy breaths at each of his own touches.

Your eyes are rapt at his every movement, heart pounding .You briefly wonder if this is how he touches himself when he’s all alone, if he makes the same heavy breaths and twitches of his ears.

It takes only moments for something to begin breaching the folds of Lo’ak’s slit, his breath coming a little heavier. Slowly, a cock emerges from the sheath inside his body, a lighter shade of blue tapering to pinkish at the tip. There’s no balls that follow it, though the base seems a bit swollen as he hangs at half-mast before you. 

“Whoa.” You clear your throat quickly, averting your gaze from Lo’ak’s laughing eyes. “Thought you’d be bigger, honestly.”

It’s a big fat lie, and an obvious one too. Even without being fully hard, Lo’ak’s cock almost easily matches the length of your forearm.

“Oh, fuck off. I can smell you, you know. I know just what you think of your first Na’vi cock.” His tone isn’t malicious, just teasing, each word laced with 

Your face flushes, fingers twitching anxiously against your thigh that still sits tucked up against you. It’s easy to forget how superior Na’vi senses are when you spend so little time with them, especially outside of the lab. You briefly wonder if Lo’ak has been able to tell every time you’ve felt a flare of arousal in his presence, if he had connected the dots that your brain constantly wandered to your filthiest thoughts in his presence.

He leans forward, pressing one hand on the arm of the couch behind you. He’s close now, his breath near ghosting over your face as his eyes search yours. “Your turn. Not much of a competition if I’m the only one showing off, now is it?”

This is quickly treading into dangerous territory, something that sobers you up quicker than any water of coffee could. Lo’ak’s hand is still cradling his length, just ghosting lightly along the enlarged base as he leans over you with his muscled body. You know you’re hard, can feel the blood rushing from your head to pound between your thighs, can feel your length pressing uncomfortably against the cotton of your shorts. Unlike him, there’s nowhere for you to hide, no way to conceal just how affected you are.

You feel like you’re free-falling, diving head first into all the emotions you’d convinced yourself would be better off tucked away. Part of you wanted to keep it all at arm’s length, to let this be a moment of lust, another memory to be tucked away. The other part wanted to jump in feet first, consequences be damned, fuck the fallout.

You steel your nerves as Lo’ak backs off a little, giving you the space to undo the buttons of your pants. You know you can end this all with a few words, that if it really bothered you Lo’ak would forget this ever happened and never bring it up again, because he was that kind of guy. Except, you’re sure you aren’t imagining the lingering heat in Lo’ak’s gaze, or the excited flick of his tail as his eyes follow the movements of your fingers as you drop your pants.

You don’t need visual confirmation to know you’re already hard and leaking, the tip of your cock red and aching as your fingers ghost along your thighs.

“Looks like I win.” Lo’ak’s voice is breathier than before, his knee brushing against your leg as he lingers closely to you. His hand still sits close to his own cock, which has made no signs of retreating back into his body.

“Okay, you’re obviously gonna be bigger than me. You’re a fucking giant.” Your face flushes, trying to ignore the throb in your cock as Lo’ak’s eyes trail across your body.

“Don’t be so hateful, bro. No one likes a sore loser.” 

“Yeah, well, at least I have more stamina than you.” It’s so easy to slip back into teasing sarcasm, like a shield you can put around yourself to keep all the confusing emotions at arm’s length. It helps you feel some control that has been steadily slipping away, grasp onto some sort of reality.

Lo’ak just chuckles lowly. “More stamina? I’m a trained warrior, bro. Stamina is my game.”

You snort, trying desperately to forget the fact that you’re both naked beneath the waist. “You’re the most reckless fucker I’ve ever met. I bet you blow your load in two seconds.”

“Oh, come on, you’re the pent up little scientist. You really think you can last longer than me?” Lo’ak’s voice deepens, one of his hands trailing up across the outside of your thigh as he shadows over you.

“Try me.”

Lo’ak’s mouth is on yours before you have a chance to regret the challenge. He’s so much bigger than you, and the way his entire mouth encompasses yours is strange but not unpleasant. One of his hands eagerly comes up under your shirt and along your ribs, the other holding up his weight on the couch behind you. You run your fingers up along the planes of his body, tracing the ridges of his ribs and the curve of his shoulders, to embed them in your memory.

He gasps as he pulls away from you, his hips dipping to nudge his hardening cock against your hip as he leaves a line of wet kisses from the corner of your mouth to underneath your jaw. You vaguely register his tail thumping excitedly into the plush of the couch, the way his ears twitch forward to catch every hitch of your breathing.

“Shit, you’re so hot.” Lo’ak’s voice mumbles across your skin, canines grazing the sensitive skin of your neck as he pushes himself closer to you.

“Touch yourself.” You gasp, tightening your grip on Lo’ak’s bicep as he pushes his hips down into you.

Lo’ak pauses. “What?”

“Come on, you wanted to talk a big game. Let’s see how long you really last.” Your grin is devilish, edged with excitement and desire as you trail your fingers teasingly across the muscle of his arms. You delight in the little shiver that passes through him.

“Wouldn’t you rather be the one to touch me?” His voice is raspy, breathless as he nibbles along the curve of your neck.

“Oh, where’s the fun in that, pretty boy?” You bite your lip in a grin, resting your forehead along his own. “We want this to be a fair trial, and having my skilled hands on you could definitely skew the results.”

Lo’ak laughs, removing his hand reluctantly from your ribs to palm along his own cock. “Fine, no touching. For your results.”

You can feel yourself steadily losing control as you lean back and watch Lo’ak—the way he teasingly trails his fingers down his own chest and across his cock, the little gasp he lets out when he tightens his fingers around the base, the desperate hitching of his hips as he keeps his eyes firmly on you as he works himself over.

Lo’ak’s eyes flick expectantly towards your own hard cock, moaning loud as he finally sees you grip yourself in your palm. You’re so sensitive and it’s been so long, each touch feels magnified with Lo’ak above you, watching your every move with panting breaths. Lo’ak slows his movements on himself a bit, moving to grip himself at the swollen base of his cock. His reaction is immediate, a deep groan vibrating through his chest as his eyes roll a bit.

You tighten your grip on the base, heat shooting through you as you drink in the sounds of Lo’ak’s moans. Fuck, of course he’s loud. Your lips brush against his own as you speak. “Jesus, the sounds you make are fucking incredible.” 

A knowing smile reaches across Lo’ak’s flushed face. He parts his lips to run over yours, drinking in the sigh you let out. “Really? Well, you’ve got a pretty incredible mouth too.”

“S-shut up-” You gasp. You know you should go slow because some stupid part of you still wants to win, to make Lo’ak come undone first because of you. Yet, you can’t help the way your fist tightens at each wet little gasp coming from Lo’ak’s mouth, the way your hand quickens around yourself as you watch his pretty cock move through his fist.

“It’s true. You don’t know how many times I’ve done this thinking of your stupid smart mouth, how it would feel.” Your breath hitches at Lo’ak’s words, each breath emphasized with the roll of his hips into his own fist.

“Oh, oh, shit.” You know your desperation is seeping into your tone, suppressed moans barely being hidden by your gritted teeth. You’ve always been weak to Lo’ak, and now is no exception, especially now with the admission that he’s thought of you before.

“You look so sexy like this, all spread out under me. You know, you’re always calling me pretty boy but you’re putting me to shame here, narlor.” Lo’ak’s eyes are hazy but calculating, watching each expression on your face as the filth he’s saying echoes into the air around you. He has a look in his eye, like he knows he’s winning.

“Oh fuck you.” You groan, your hips moving desperately up into your hand. You can feel the heat of Lo’ak’s body encompassing you, the head of your cock brushing against his leg with each movement of your hips. “I know what you’re doing.”

“Hah, really?” Lo’ak gasps. The sly grin that comes across his face is all the confirmation you need.

“You’re trying to get me off, by…by saying that stuff. I-it’s cheating.” You moan as your fingers snag against the head of your cock, catching the precum leaking from your tip to slicken the slide of your fist.

“Oh, that wasn’t in the rules,” he teases, licking a stripe up your neck. He lowers himself closer to you, the head of his cock bumping against your stomach where your shirt has ridden up. “Not my fault I can’t stop thinking how perfect you’d feel wrapped around me.”

Fuck, you don’t know if he means your mouth or your ass but it really doesn’t matter, either one of the images sending your brain into a frenzy. A moan rips through you, fingers twisting around your cock. It’s so easy to picture how Lo’ak would look inside you, or how he would fall apart on your fingers. It has you hurtling dangerously close to the edge.

Your breath quickens as you look up into Lo’ak’s eyes, dark pools ringed with the slightest amount of gold. His tail coils around himself, wrapping possessively around your shin.

“Fuck, look at you. It’s like you’re out of a wet dream.” Lo’ak grits his teeth, pushing his cock up against you as he strokes himself. You can see the slick from his slit dripping across his cock and down his thighs, a sweet and musky smell coating the air.

“Hah, have a lot of d-dreams about me?” You tease, but your voice is thready, more pleading than asking.

He grins against your lips. “Maybe. Wouldn’t you like to know.”

And fuck the thought has you reeling. It’s so easy to see Lo’ak in your mind, waking up hot and needy to dirty thoughts of you, half-asleep as he stuffs a fist in his mouth and strokes himself to completion with your name on his lips.

“S-shit, shit, Lo’ak, I-” your breaths come in quick gasps, too turned on to care about any embarrassing sounds that are leaking from your throat.Your body is thrumming with energy as heat coils tightly in your stomach.

“I want you to come, narlor. Right now, on me.” Lo’ak groans and you can feel his fist bumping into your hip with his rapid movements. Your eyes are clenched shut, riding the overwhelming feeling of your orgasm 

“Come, let me see it. Now.” His voice is urgent, pleading.

“Oh, f—uh-”

The muscles in your thighs clench as you buck up into your fist, your cock bumping Lo’ak as you come across your fist and stomach, smearing your release onto your partner with each movement onto Lo’ak. Your nails dig into the skin of his shoulder, a moan tumbling from your throat as you come harder than you ever had. Maybe there was something to Lo’ak’s theory about Na’vi cock after all.

Lo’ak isn’t far behind you, panting into your mouth as his hips move unsteadily against you. His throat strains around a loud groan, and you’re able to open your eyes just soon enough to see his face scrunch in pleasure, ears twitching with each rolling wave of pleasure pulsing through him. 

You try to commit the look to memory, down to the lopsided and dopey grin that stretches across his face. Lo’ak sighs with satisfaction, his dirty hand coming to rub softly across your hip. “Told you I would win.”

You can’t help the giddy smile that comes across your face, giving a peck to his grinning lips. “Best two out of three?”