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Be young, have fun (taste naughty)

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Namjoon's never met someone with a knot before.

Well, strictly speaking that's not true. Knots are pretty common—nearly as common as being left handed, about one out of every twelve dick-having people (since, you know, not all dick-having people are dudes). So, just going by the statistics, Namjoon must know some people who have knots. But he's never met someone with a knot, knowing that they have a knot. It's different.

It's not like he meant to look. But they were standing side-by-side in the bathroom and he just happened to glance over (what, guys compare dicks okay? It's a thing ) and there it was. Not the knot, obviously, but there right at the base of Hoseok's dick was a slight bulge. The skin was smoother there and a bit shiny, kind of like scar tissue. Namjoon turned his head back before Hoseok could notice him looking, and wondered what the knot must look like.

Namjoon's not obsessed, and he's not gonna be weird about it either. It's not like Hoseok can help it. Besides, knot discrimination is so last century. It's just. There.

It’s there when he's sitting on the sofa, listening to their manager give a rundown of the day's schedules. When he's pausing for a break during dance practice. When he's lying in bed trying to fall asleep after a long, long day of training, listening to the breathing of six other guys in the surrounding bunks. Listening to one particular guy snoring in the bed opposite.

He gives up on sleeping, for tonight anyway, and pulls up a video on his phone to watch. His taste in porn's always been pretty vanilla, but recently his browser history has developed a bit of a kink. The video he's picked tonight isn't the best quality, overly pixelated, but it's enough for him to get a good view of the guy's dick: thick and hard, with a frankly huge knot at the base. The chick he's supposed to be nailing looks a little bit intimidated. Namjoon can't blame her.

He's just slipping a hand into his pajama bottoms when he feels the bed dip and Namjoon jolts up, jerking his headphones out of the jack. Moans fill the dorm room, and he scrambles to try to find his phone in the tangle of blankets. A hand reaches in and plucks his phone out of the mess, pausing the video onscreen. Hoseok's sitting on the end of his bed, biting his lip like he's trying to keep himself from laughing, the dickwad.

"Shut up," Namjoon hisses, feeling his ears burn.

"Didn't say anything," Hoseok says, still grinning. He glances down at the scene frozen on Namjoon's phone, and his brows shoot up. "Huh. Didn't know you were into knotting porn."

If Namjoon's ears get any hotter they'll be on fire. "I'm not," he mutters, staring down at his hands. "It's...for research."

"Research." Namjoon can hear the amused skepticism in Hoseok's every word. "What for?"

Namjoon shrugs, still staring down into his lap. "Nothing." I can't stop thinking about your knot. "Just—curious. I've never met someone with one before."

There's a pause. "So that's why you've been acting so weird lately. You could've just asked," Hoseok says softly, like he's actually a little hurt, and Namjoon looks up, startled.

"What? No, it's not you!" he starts, and fuck, that's not what he meant to say. "I mean, it is you, but it's not like—it doesn't bother me. I mean, not that you care if it bothers me, shit. It's just normal, right? I know it's just like—like you're left-handed, or something," Namjoon stutters, and Hoseok raises an eyebrow.

"It's not quite like being left-handed," he drawls, and Namjoon feels himself flush even darker.

"I know, shit, sorry that was dumb—"

"Do you want to see it?" Hoseok interrupts and Namjoon's jaw snaps shut with an audible click. Hoseok's staring at him intently, totally still, and holy shit he's serious. This is a terrible idea.

It's a terrible idea, because they're trainees, they spend almost every waking (and even sleeping) minute with each other, training with each other, working with each other, touching each other. If all goes well, they could continue to spend nearly every minute with each other for the rest of their lives. Does Namjoon really want to suffer through all those minutes together with the image of Jung Hoseok's knot burned into his retinas? The last few weeks have been torturous enough, and that's been based purely on his imagination.

This is a terrible idea. "Yeah," Namjoon breathes into the silence between them, "yeah."

And this is how it happens that Namjoon finds himself locked in the bathroom at two o'clock in the morning, watching Hoseok try and jerk himself off.

Try being the operative word. Hoseok's mostly hard by now, but his knot is still flat and smooth despite how tight and fast his right hand is moving. He's got his lower lip clamped between his teeth, eyes screwed shut like he's concentrating. It honestly looks a little painful.

"Dude, calm down," Namjoon tries, hesitantly, "you're gonna break yourself."

"Well, you're making me nervous!" Hoseok snaps, and he's kind of flushed and flustered, not nearly the confident guy who'd coolly invited Namjoon to look at his knot just half an hour ago. Paradoxically, it makes Namjoon feel a little bit better.

"Hey," he says. "We can stop if you don't want to. I don't want to, like, force you or anything."

"You're not," Hoseok says, red spots high on his cheeks. "It's just, you're staring a lot and it's..." he trails off, but Namjoon thinks he gets it.

"What if I..." he plucks at the drawstring of his pajama bottoms, hoping Hoseok will catch on, and it seems like Hoseok does, because he nods gratefully and nudges the half-empty bottle of lotion lying on the floor between them with his foot so it's a little closer to Namjoon. Namjoon reaches for the lotion and squeezes a bit onto his palm before pushing his pajamas and boxers out of the way. He's already half-hard just from watching, so he keeps his grip loose and slow.

Hoseok sighs and leans his head back against the wall, his own hand slowing to match Namjoon's. They stroke together for a while, not talking, their breaths mingling and speeding up. Namjoon looks up after a few heated minutes and his breath catches in his throat.

Hoseok is flushed, red disappearing down his chest into the loose neck of his old t-shirt. His hand is moving fast again, fist sliding up and down the slicked shaft as he thumbs the head. At the base, his knot has begun to swell.

"It's...big," Namjoon says.

"It gets bigger."

"Damn." Namjoon's not really that surprised (he's watched porn after all), but somehow it's different in person, seeing it—thinking about how it might fit in someone. "Really?"

"Well, yeah," Hoseok says, rolling his eyes, but the slightly breathless tone of his voice ruins the effect. "It's supposed to, you know, keep the come inside, so."

Namjoon licks his lips. "Have you ever?"

"No." Hoseok shakes his head. "It's not really...practical."

Translation: an hour-long knot isn't exactly compatible with the average trainee's sexual diet of rushed handjobs and the occasional quickie in the single-unit bathroom on the fourth floor.

"How does it work?" Namjoon wonders out loud. It's bad enough having to will down a regular boner, Namjoon knows from experience. He can't imagine what it must be like with a knot that lasts between 25 minutes to an hour on average. "Can you, I don't know, control when you knot and when you don't? Or how long it lasts?"

"Nah, it's more like I just keep it out," Hoseok explains. "It doesn't last that long when it isn't in something, you know." Namjoon doesn't really know, but he gets the, uh, point.

"What does it feel like?"

"Sensitive," Hoseok grunts. "So fucking sensitive."

"Fuck," Namjoon says tightly, staring at the swollen knot. Hoseok is palming himself with his free hand while the other continues to stroke his shaft. The contrast between the tanned skin of his hand and the dark red-purple of his knot is breathtaking. Namjoon's not even jerking himself anymore, just squeezing the base of his dick as he watches Hoseok.

"Can I...?" He reaches out, one hand hovering over Hoseok's lap, wondering if he's overstepping.

Hoseok licks his bitten lips, pupils blown. "Yeah. Okay."

Hoseok moans the second Namjoon touches him, closing his eyes. The knot is hot and hard under Namjoon's palm, flushed skin stretched taut. He can feel it throb in time with Hoseok's pulse when he tightens his hold. "Fuck, Joonie," Hoseok groans, curling forward over his lap.

Namjoon shifts closer, leaning over Hoseok to slide his hand upwards from the base to the shaft. He can see the thickness of the knot stretch his fingers wide, big enough in the middle that he can't fully reach around. "Does it feel good?"

"Yeah. Of course," Hoseok pants into the crook of Namjoon's neck.

Namjoon continues with slow, measured strokes keeping his eyes glued to his fist moving over Hoseok’s cock. His knot swells a little under Namjoon’s hand, and Namjoon pauses to run his thumb over a thick, blue-green vein.

"Fuck, Joonie, stop teasing." Hoseok's hips stutter forward into Namjoon's grip and a whine escapes his lips. “ Faster .”

“Yeah, yeah.” Namjoon huffs a laugh, but speeds his strokes up a little. “Bossy.”

In porn, the actors always seem to compare their knots to things like bowling balls. Hoseok’s is definitely not big enough to bowl with, Namjoon thinks, but it’s…sizeable. Like a softball maybe. Or a shotput.

There’s a choking sound, and Namjoon looks up to see Hoseok’s face caught in an expression somewhere between pained hilarity and arousal. “Did you just say you want to go bowling with my dick ?” he asks.

Namjoon snorts. “What, with this?” He gives the knot another squeeze and grins at Hoseok’s sharp intake of breath. “You couldn’t knock down a single pin.”

“I beg your pardon. This dick has gotten a hole in one on at least four occasions,” Hoseok snipes breathily.

“That’s golf, not bowling,” Namjoon wrinkles his nose, “and I do not need to know any specifics about your sex life, thanks.”

Hoseok, naturally, takes this as a challenge. “Well this one girl—”

“God, shut up,” Namjoon groans, slapping his free hand over Hoseok’s mouth. Hoseok licks his palm (because of course he does), but Namjoon keeps his hand firm. “Shut up or I’ll stop.”

Hoseok nods and Namjoon gingerly releases him. “Didn’t know you’re so sensitive, Joonie,” Hoseok says slyly once his mouth is free. He smirks. “Don’t worry, I won’t talk about anyone else while I’m with you, jagiya ,” he adds, teasing.

“Shut up, why are you always such a pain,” Namjoon says, but he can feel his ears burning.

“Yes, I am in pain,” Hoseok whines, gesturing down. Namjoon’s stopped jerking him while they’ve been talking, his hand resting loosely around Hoseok’s dick. “Are you going to get me off this century? Or should I just finish up myself?”

“Okay, jesus, you’re so pushy,” Namjoon grumbles, but he doesn’t start moving right away. He has an idea. A crazy idea. Not that this whole damn situation isn’t already crazy.

He slides backwards until he’s crouching over Hoseok, lowering himself onto the tiles belly down. Hoseok makes a noise of dissent like he’s confused, but then Namjoon’s mouth is level with his cock and—

“Holy shit,” Hoseok whispers, his voice reaching a pitch even Jimin would be proud of. “Joon-ah, that’s—you don’t have to—”

Namjoon licks over the head and Hoseok chokes on his next words, groaning. Feeling bolder, Namjoon balances himself on his forearms and leans forward, taking just the head into his mouth. The taste isn’t too bad, salty and a bit bitter. He pulls back for a second before taking Hoseok deeper. His cock is hot and heavy on Namjoon’s tongue, and it feels much bigger than it had in his hand. Namjoon pushes down until his lips just graze the swell of Hoseok’s knot.

“God, Joonie,” Hoseok pants, his hands twitching against his tense, quivering thighs. “ Fuck .”

Namjoon gives a hum of assent and Hoseok keens , jerking forward helplessly. “Shit, sorry,” he gasps, but Namjoon just pins his hips down, holding them steady.

It’s been a while—and by a while, he means at least a year—since Namjoon’s given anyone a blowjob. But it’s a pretty straightforward business. He sucks and bobs his head, pressing his tongue into the sensitive underside as he drags his mouth up, and he can tell Hoseok’s enjoying himself by the string of muffled curses and moans falling from his lips. But it’s not enough somehow. Namjoon’s already throbbing, achingly hard, but he wants Hoseok deeper. Harder. He wants Hoseok shaking apart beneath him.

Namjoon pulls off.

"Knot my mouth."

"What?" Hoseok groans, eyes barely focusing.

Namjoon swallows. His lips feel wet and raw, there’s a crick developing in his neck, and his jaw is already tired. But he wants this. "Knot my mouth."

"Fuck," Hoseok says, staring. "Fuck, Joonie. That could—what if I hurt you?"

Namjoon shakes his head. "You won't. I won’t let you.” He squeezes Hoseok’s hips in reassurance. “Come on, Hobi," Namjoon begs, pouting up at Hoseok, his mouth just inches from Hoseok's dick. "Don't you want to?" He knows what it must look like, what he must look like, but he still feels an exhilarating surge of achievement when Hoseok groans.

"Yeah. Yeah, fuck, okay."

“Get up then,” Namjoon orders, pulling Hoseok up and pushing him back against the sink so Namjoon can kneel between his legs. He takes Hoseok back into his mouth, cradling the knot in his palm. Hoseok settles a hand in his hair.

“Go on then,” Hoseok murmurs, eyes dark as he takes in Namjoon kneeling below him. Namjoon nods slightly, mouth full, and takes him deeper.

He only gets halfway down on the first try. He keeps his throat relaxed, but Hoseok is just so big , Namjoon thinks there’s no way he’ll fit. His mouth stretched to its limit around the knot, his eyes watering from the cock down his throat. But when he blinks up past the blurry tears, he can see Hoseok with his eyes squeezed shut, shuddering, one hand shoved in his mouth to muffle his moans. Namjoon pulls off. Swallows. Dives back down.

The stretch is unbelievable when he finally manages to take Hoseok all the way in. His jaw aches, and tears trickle down his cheeks. He swallows, gagging a bit, but relishing the whimper Hoseok can’t quite hold back.

“Joonie,” Hoseok whines, fist tightening in Namjoon’s hair. His hips surge forward, slipping sweat-slicked through Namjoon’s hands, and Namjoon chokes as Hoseok’s cock thrusts even deeper down his throat. He can barely breathe like this, but he’s so hot, the burning stretch in his mouth mirroring the scalding heat building between his legs. He brings one hand down to palm himself and he shudders with relief. He’s so hard that he’s already leaking.

“Shit, look at you,” Hoseok gasps, “you’re loving this.” He rubs his thumb over Namjoon’s lower lip stretched tight around his knot, smearing spit against Namjoon’s cheek. “Can you get off like this, Joonie?” Hoseok asks, and Namjoon would nod but he can’t move, transfixed by Hoseok’s cock.

“Can you come choking on my knot?” Hoseok cups Namjoon’s face and thrusts gently into his mouth again, feeling the bulge of the knot sliding back and forth against the inside Namjoon’s cheek.

“Mhhmmph,” Namjoon groans, fresh tears spilling over. He’s thrusting desperately into his own hand, keeping pace with Hoseok as he continues fucking Namjoon’s mouth.

“Come for me,” Hoseok whispers, and Namjoon jerks once, twice—

If he didn’t have a knot in his mouth, he would have screamed. As it is, Namjoon comes with a strangled sob, shuddering through his release. Hoseok holds him through the aftershocks, doesn’t let him pull away, thrusting once more into Namjoon’s slick mouth and before pulling out and coming in thick, hot spurts. Come coats Namjoon’s lips, cheeks, some even catching in his eyelashes. Namjoon wipes a wad of come off his left eyebrow, and grimaces.

Hoseok slides to the floor in a boneless heap. His knot is still unbelievably hard and swollen, but Hoseok seems too exhausted to do anything about it. Instead he leans drunkenly against Namjoon, nuzzling into his neck.

“You’re still hard,” Namjoon comments, and he barely recognizes the hoarse, grating sound coming out of his mouth. His voice is wrecked . Shit, their voice coach is going to be so pissed.

“Mmmm,” Hoseok sighs into Namjoon’s collarbone. “Tired.”

“Don’t go to sleep here. Hobi!” Namjoon shakes Hoseok’s shoulder. “Get up, we have to clean up.”

Hoseok grumbles but sits up slightly straighter, propping himself against the base of the sink. When he gets a good look at Namjoon’s face however, he cracks up.

“What?” Namjoon hisses.

“You look like you’ve been frosted,” Hoseok chortles, and Namjoon shoves him. “Fuck off,” he says, feeling himself flush again. “It’s your fault.”

“Yeah,” Hoseok grins proudly. He brings up a finger, trailing it through the mess on Namjoon’s cheek. “Guess I’ll just have to take responsibility then.”

“What does that mean?”

Hoseok just shakes his head. “Come here,” he says, and he guides Namjoon forward by his chin until their faces are just a breath apart. “Kiss me,” Hoseok says.

“Has anyone ever told you you’re kind of demanding?” Namjoon asks.

Hoseok shifts so their noses brush. “Yes. Now shut up and kiss me.”

He does.