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fill me, fuel me up

Summary:

And that’s when it happens.

Maybe Hoseok means to say it to himself, he doesn’t know, but Hyunwoo can hear it anyway, clear as day: “If you like hearing me say ‘hyung’ so much, you’d probably love me calling you ‘Daddy.’

Hyunwoo discovers something new he likes in bed. Hoseok is happy to be along for the ride.

Notes:

First Monsta X fic! They've become my ults (and ShowHo my OTP), so expect more in the way of this filth sometime in the future.

Written for the "Firsts" and "Daddy kink" squares on for the Blue Moon Happy Shownu Day mini-bingo event! Thank you to the mods for extending the deadline for everyone by a week, as it allowed me to put this fic together!

Title from Monsta X's "Monsta Truck," because doing it made me laugh.

Work Text:

“Mmmmmh, fuck, hyung.”

Hyunwoo laughs a little at that, presses his face to the juncture of Hoseok’s neck and shoulder as he moves. They’re in bed, and Hoseok is sprawled beneath him looking like the most beautiful thing Hyunwoo has ever seen. His dark hair is plastered to his forehead with sweat, face scrunched up in pleasure as Hyunwoo fucks him in deep, heavy strokes.

Hoseok’s hands scrabble at Hyunwoo’s nape, fingertips slick against Hyunwoo’s sweaty hairline. His legs are wrapped around Hyunwoo’s waist, heels digging into Hyunwoo’s ass as Hyunwoo fucks him. The air between them is humid, Hoseok panting as he drags Hyunwoo in for an open-mouthed kiss. Hyunwoo’s head feels pleasantly hazy from affection and arousal. He grunts out his pleasure against Hoseok’s mouth as he reaches a hand between them to stroke Hoseok’s cock.

Hyunwoo loves fucking Hoseok like this — slow, like they have all the time in the world. Loves the way Hoseok arches his back prettily with a moan when Hyunwoo hits his prostate dead-on. Arousal simmers low in Hyunwoo’s gut. He’s fucking Hoseok’s ass without urgency, the room quiet save for their shared gasps and the squeaking of the box spring. Sometimes like this, Hyunwoo loses track of time, lost to the feeling of Hoseok’s body around his, the sound of his breathing.

And then there’s the way he likes to talk.

“Nnnnn, shit, hyung,” Hoseok slurs. His tongue darts out to lick at his plush bottom lip. Hyunwoo’s mouth dips down to chase it. Shivers of satisfaction race down his spine when Hoseok sucks on his tongue with a moan. His fingers grip in Hyunwoo’s hair, holding him close as Hyunwoo continues to piston his hips. “Fucking me so good,” he whines. “So fucking good, hyung.”

Hyunwoo groans for it. Hoseok’s like that in bed. Vocal. And while Hyunwoo has never been much of a talker himself, he’s so weak for Hoseok’s voice when they fuck, whether it’s coy teasing or loud, shameless moaning.

Hoseok moans now, airy-light and beautiful, when Hyunwoo’s hand twists expertly over his cockhead. The sound of it is so sweet, Hyunwoo thinks it’s like honey, dripping slow and sticky down his spine. Something about his voice, Hyunwoo thinks vaguely. Something about the way Hoseok calls him hyung so desperately, achingly intimate in a way it isn’t outside the bedroom. A shameful part of Hyunwoo thinks he could get off on that alone.

Hoseok’s not done talking, it seems. “God, hyung, don’t stop,” he whines. At that, Hyunwoo bites down on a quiet moan of his own, dutifully keeping his head down to fuck Hoseok through his gasps.

Hyunwoo must be more transparent than he thinks, because Hoseok just giggles huskily. “Like it when I call you ‘hyung’ when you’re fucking me, yeah?” he teases. He’s got a smile playing on his lips, but his voice is labored, like the sound is being pushed out with every fuck of Hyunwoo’s hips. “You like it when I talk?”

Tongue-tied from pleasure, Hyunwoo can only nod in response. Hoseok laughs at him gently.

“I like it, too,” Hoseok says. He moans as Hyunwoo’s hand speeds up over his cock, eyes squeezing shut as he tosses his head back. Hyunwoo shifts to suck a bruise into his pretty, pale throat. “Mmmm, fuck, —’m getting close, hyung’s gonna make me come, gonna — shit, hyung.” And as much as Hyunwoo could keep fucking Hoseok like this all night, he is powerless against that voice.

Hyunwoo takes his hand, spits in his palm, and returns it to Hoseok’s cock, making the slide of his fist over Hoseok’s cockhead slick and easy. Hoseok is twitching beneath him, his teeth worry his bottom lip as Hyunwoo pins him between two points of bright sensation. Hoseok’s brow furrows as he gets closer to orgasm, and the anticipation of it leaves lust coursing through Hyunwoo’s veins. There is nothing in this world he loves more than watching his boyfriend fall apart. Desperate for it, the grind of his hips becomes faster, his hand moves quicker over Hoseok’s prick. As Hyunwoo tiptoes closer to his own climax, he drinks in Hoseok’s soft whimpers of “hyung.

And that’s when it happens.

Maybe Hoseok means to say it to himself, he doesn’t know, but Hyunwoo can hear it anyway, clear as day: “If you like hearing me say ‘hyung’ so much, you’d probably love me calling you ‘Daddy.’

Hyunwoo fucks into Hoseok so hard that Hoseok squeaks in pain, orgasm hitting him like a fucking freight train.

Dimly, he can hear Hoseok crying out, but it’s a distant sound — the thundering of Hyunwoo’s own pulse drowns out everything else, leaving him dizzy. With a loud groan, he buries his face in Hoseok’s shoulder as the force of his climax crashes over him in a heavy wave, aftershocks of sensation quivering underneath his skin. It’s all he can do to try and catch his breath, limbs heavy as he rides out the final waves.

After a few moments, his breathing feels steady enough that he can open his eyes and look down. He sees his hand still tightly wrapped around Hoseok’s cock.

His hand is covered in come. Hyunwoo’s eyes dart back up to his boyfriend. Hoseok blinks up at him, pupils blown. “Holy shit,” he meeps.

“Holy shit,” Hyunwoo parrots back.

And — oh god, shame and burning arousal slosh sickly in Hyunwoo’s stomach, both so hot and sharp that Hyunwoo can barely tell the difference. Gut churning, Hyunwoo pulls out, trying to be as gentle as he can. He swears he can hear the slick shhhlk of his cock slipping out from Hoseok’s body, and it makes his stomach sink further. He can’t quite meet Hoseok’s eyes.

Hyunwoo swallows, and his throat feels like sandpaper. “I should, uh.” He clears his throat, and the sound comes out a little stronger this time. “I’ll, I’ll get you something to clean up.”

Before he can get off the bed, however, Hoseok grabs for his arm.

“Hyung,” he starts. His thumb begins rubbing gentle circles into Hyunwoo’s skin. It doesn’t quite quell the jackhammering of Hyunwoo’s heart, but it helps. Hoseok always helps. He feels himself settle against the mattress. “I’m sorry,” Hoseok says. “I shouldn’t have sprung that on you.”

“No, no, it’s fine,” Hyunwoo says automatically. He takes a moment to wipe his hand on the sheets. They’re done for anyway, he’s going to have to change them before they sleep. “You didn’t do anything wrong.” He glances up at Hoseok, but still feels too guilty to hold his gaze for long. Maybe if he tries to explain — “I should apologize,” he tries.

Hoseok’s brow is quirked in confusion. “For what?”

“For getting…” Hyunwoo shrugs. It’s not that Hoseok is weak. Hyunwoo knows that firsthand, Hoseok can outlift him any day. Hoseok’s the strongest person he knows, he can take any punishment dealt to him. But that’s not the problem here, and Hyunwoo is struggling to put it into words. “For getting carried away, I guess,” he finishes lamely.

Hoseok is pulling a face now. “Carried away? Hyung, I’m the one who said it.”

Hyunwoo sighs, frustrated. “You know what I mean,” he says.

“No, hyung, I really don’t.” Hoseok reaches out to trail his fingers underneath Hyunwoo’s chin. The touch is so gentle and feather-light, and Hyunwoo turns into it like a housecat accepting affection. Hoseok continues, voice soft and careful. “Hyung, you seem really bothered by this, and I don’t think you have to be.”

Hyunwoo takes a breath, says, “I was too rough at the end.” He takes Hoseok’s hand, caresses Hoseok’s palm with both thumbs. “And I shouldn’t have been. That’s why.” He looks up, holds Hoseok’s gaze seriously for the first time since they began speaking. “I never want to hurt you.”

“But I’m okay, hyung,” Hoseok says. A kind smile plays on his lips as he laces their fingers together. “Sure, you were a little rough, but it’s not like I mind it. You didn’t hurt me.”

Hoseok still isn’t getting it, though. Slowly, Hyunwoo explains, “But I keep wondering about what would happen if I had, Hoseok-ah. You called me….that, and…and I wanted to go even harder. You know? And it makes me afraid of what would happen if I actually let loose.”

Hoseok scoffs at him. “Hyung, that’s like, the whole point.”

Hyunwoo has never been accused of being the brightest bulb in the candelabra, but this seems obtuse even for him. His brow furrows in confusion. “What are you talking about?”

With a sigh, Hoseok rearranges himself on the bed, moving to sit between Hyunwoo’s legs. His back is molded against Hyunwoo’s chest. Hyunwoo immediately throws his arms around him, hugging him tightly from behind. “How about this,” Hoseok starts. “I’ll tell you where I’m coming from, and what I want. And then we can decide if it’s also something you want. Would that help?”

That’s one of the things that Hyunwoo loves most about him. Hoseok, more than anyone else he knows, is always open and honest about what he’s feeling. It’s like his superpower. In fact, more often than not, it’s that honesty that helps Hyunwoo himself work through his own emotions.

God, Hoseok really is the best thing to have ever happened to him.

Hyunwoo nods in agreement, and Hoseok cranes his neck to plant a kiss on his jaw.

“Okay,” Hoseok starts gently. “So. Do you remember back on your birthday last year, what you asked me for?”

Oh, Hyunwoo remembers. Usually, whatever Hoseok wants in bed is more than enough for Hyunwoo, but last year, for some reason, Hyunwoo had this mental image that he just couldn’t shake. One night, just before his birthday, he’d sheepishly asked Hoseok if he’d ever be comfortable wearing heels for him in bed. Whether or not he’d feel comfortable grinding those heels against Hyunwoo’s cock.

Hyunwoo, trying not to get too lost in that memory, nods. The visible flush settling in over Hyunwoo’s cheeks makes Hoseok chuckle, not unkindly.

“You asked me to dress up for you and stomp on your dick for a while,” Hoseok says. Hearing it summed up so bluntly makes Hyunwoo’s blush deepen, but Hoseok presses on: “I was way rougher with you than usual. But the rough treatment was part of it for you, right?”

Hyunwoo blinks. “Right.”

“And you trusted me,” Hoseok continues. “You knew that I would figure out if you were actually uncomfortable and I’d stop if you needed me to. And because of that, you enjoyed it.” Here, his cheeks flush a little, too. “I know I did.”

Hyunwoo is starting to see where this is going.

“So what I’m saying is that it goes both ways.” Hoseok leans in for another kiss, this time against the shell of Hyunwoo’s ear. “You’ve got to understand that I like it when you’re a little rough with me.” He grabs for Hyunwoo’s hand again, brushes his lips against his wrist. Hyunwoo’s pulse quickens. “Don’t get me wrong,” Hoseok says against his skin, “I love when we’re gentle and soft, too. You always take care of me, whether you’re treating me gently or pulling my hair.”

The implications of Hoseok’s words make Hyunwoo’s heart race. Surely, this is too much to hope for. “You’re saying you want this?”

Hoseok turns in Hyunwoo’s embrace to face him. “Yeah, hyung,” he smiles. “I want this.”

Fuck. Hyunwoo’s hands are close to trembling with the thought of it. He feels his dick twitch in interest. He wants nothing more than to press Hoseok back against the sheets right now and make good on this, but — probably not tonight. “Thank you for doing that for me,” he says instead, dropping a kiss to Hoseok’s shoulder.

“I mean, it’s a little for me, too,” Hoseok laughs. “A lot for me, actually. The idea of calling you ‘Daddy’ while you’re nailing me into the next century sounds really hot.”

Just hearing Hoseok say it again has Hyunwoo’s dick starting to fill out, now lying half-hard against his thigh. But it’s late tonight, and Hoseok probably wants to go to bed. “Good to know,” he says. He leans in to kiss Hoseok gently, says, “Then we can talk about doing this again soon.”

“We can,” Hoseok says, his eyes half-lidded coquettishly. Yet again Hyunwoo is struck by how perfectly he balances cute and sexy. He feels like there should be a new word invented, just to describe him. “But I can feel you getting hard against me.” He kisses Hyunwoo again, lips brushing Hyunwoo’s when he whispers, “And I could go again, Daddy.

And fuck, but Hyunwoo could never say no to him.

Heart hammering, Hyunwoo grabs a fistful of Hoseok’s hair, reeling him in close. Hoseok’s mouth drops open with a gasp, and Hyunwoo leans forward to spit in his mouth.

With a sharp whine, Hoseok surges against him, diving in for a brutal kiss. Hoseok moans into his mouth and Hyunwoo licks over his soft palate, reaching down to jack Hoseok’s cock in hand. It seems that Hyunwoo wasn’t the only one affected; already, Hoseok’s cock is steadily leaking precome. He shudders when Hyunwoo presses his thumb against the slit. Hoseok’s hands grip at Hyunwoo’s biceps as they kiss, fingertips digging into his skin harshly. The wrecked little moan that Hoseok gives him makes Hyunwoo growl.

He has to hear it again. He needs to hear it again.

His heartbeat thunders in his ears and he pulls back from the kiss. “Call me, again,” he says, voice close to begging.

Hoseok’s eyes are clouded over with lust. “Take what you want, Daddy,” Hoseok breathes against his mouth.

Shivers race down Hyunwoo’s spine, white hot and sharp. It’s like his body has been shocked with an electric charge. The adrenaline buzzes under his skin, makes his hands tremble when he pulls Hoseok’s hair again, hard.

“Want you on your stomach,” Hyunwoo grunts. “Face down, ass up.” Before Hoseok can even move, Hyunwoo forces Hoseok’s head down, earning him a sharp cry. Hyunwoo crowds over him, moving one hand between Hoseok’s muscular shoulder blades to shove him down against the bed. God, but Hoseok is a sight like this. His forearms quaver against the sheets, ass raised high in the air, ready for the taking, hole still wet from lube and Hyunwoo’s own come. Hyunwoo feels crazy with it.

Hyunwoo leans in, and without warning, licks a fat stripe from Hoseok’s perineum to his asshole. Hoseok wails, hips flinching away on reflex, but Hyunwoo grabs him by the thighs and pulls him back towards his face. His tongue flickers against Hoseok’s asshole, lapping up the come that’s dripping there. Hoseok’s answering moans are absolutely wrecked, face pressed against the sheets while Hyunwoo eats him out.

“Want Daddy’s cock,” Hoseok whimpers, Hyunwoo’s tongue licking into him. “Wanna be fucked, Daddy, please!

And fuck if that’s not the best sound that Hyunwoo has ever heard. Groaning, Hyunwoo lifts himself back up to kneel over Hoseok. He steadies his cock in hand to slide balls-deep back into Hoseok’s body. Between the lube, saliva, and the last traces of Hyunwoo’s come, it’s slick, hot, tight, Hoseok’s ass sucks him in so greedily and Hyunwoo swears, immediately pistoning his hips to fuck back out again.

He slides back in, and Hoseok yelps from the force of it. Hyunwoo gives him no time to reacclimate to the stretch of his cock, instead fucking him deep and hard, the fuck of his hips pushing Hoseok futher up the bed with every push, making him wail. Dimly, Hyunwoo wonders if he should feel bad for getting off on Hoseok’s noises of pain. But mostly? He needs Hoseok to be even louder.

Fuck!” Hoseok’s face is pressed against the sheets, body taut like a bowstring as Hyunwoo grinds his cock back inside. “Fucking god, Daddy.” Hoseok fucks himself backwards, ass meeting Hyunwoo’s hips thrust for filthy thrust. Hyunwoo’s hitting Hoseok’s prostate dead on like this, and he watches as the overstimulation makes tears spring to Hoseok’s eyes.

If he was fucking Hoseok slow and lazy before, then this is brutal. The room is loud with the sound of Hyunwoo’s balls slapping against Hoseok’s ass and the slick squelch of lube. Hyunwoo watches as a droplet of sweat rolls from his brow to hit Hoseok’s flushed skin. Fuck, but that’s another thing that Hyunwoo loves about Hoseok — how pretty his pale skin blushes. How nicely it bruises.

Acting on instinct, Hyunwoo reels his hand back, smacks it against Hoseok’s ass with a loud crack. Hoseok keens for him as Hyunwoo’s handprint blooms bright red against his pretty skin.

And Hyunwoo’s still not much of a talker in bed, but — “Take it, baby boy,” he grunts, hand fisted in Hoseok’s dark hair, keeping his head in place, fucking him harder still. He feels out of his mind, molten lust coursing through his bloodstream as he smacks Hoseok’s ass again, fucks him faster. It’s like he’s using Hoseok this way, like he’s just — “Just Daddy’s cocksleeve, huh?” Hyunwoo asks, suddenly emboldened.

Hoseok is sobbing at this point, Hyunwoo can hear his snuffling against the sheets. He’s made Hoseok cry during sex before, mostly due to overstimulation, but this? This is desperation. Hyunwoo thinks he’s never been this turned on in his life.

When he takes too long to answer, Hyunwoo fists his hand back into Hoseok’s hair, hauls him in closer with a vicious fuck of his hips. “Answer me, baby boy.” His voice is like gravel, strained with effort and arousal. Just seeing Hoseok’s red-rimmed eyes is enough to make Hyunwoo groan.

“‘M just Daddy’s cocksleeve,” Hoseok agrees readily, voice thick with tears. He gasps out his pleasure in little hiccups of air, like he’s stuffed so full of cock, he doesn’t have the space for anything else. “Harder, Daddy,” Hoseok begs. Hyunwoo watches fat tears fall from Hoseok’s dark lashes. “Wanna be fucked — hic — harder!”

“Shit,” Hyunwoo swears. He plasters himself against Hoseok’s back, snapping his hips brutally hard as Hoseok sobs beneath him. He wraps his hand around Hoseok’s stiff cock, stroking him off as Hoseok cries. Hoseok’s cock twitches in his hand, filthy with precome. Hyunwoo’s balls draw up tight, savoring the way Hoseok’s ass clenches around him with every jerk of his hand over his prick.

Hyunwoo can feel the telling way Hoseok’s body pulls taut beneath him, tensing as he plummets headfirst towards climax. Hyunwoo isn’t far behind. “Daddy, I wanna come,” Hoseok sobs. “Been so good, been your good boy, please let me come, please let me come, Daddy —

“You can come,” Hyunwoo tells him, voice barely above a whisper. He’s never been more desperate for anything in his life. “Come for Daddy, sweetheart.”

With a shuddering cry of “Daddy!”, Hoseok falls apart, cock painting Hyunwoo’s hand with hot come as he surrenders to his orgasm. He’s trembling with the force of the aftershocks, clenching down so hard around Hyunwoo’s cock that Hyunwoo groans from it. Fire licks at the base of his spine as he feels his rhythm start to falter.

“Gonna come, too,” Hyunwoo growls. “Fuck, Hoseok-ah.”

Hoseok is sprawled limply beneath him, but still he has the presence to say, “Come on me, Daddy, come on my ass. Mark me up.”

Shit. Hyunwoo can’t say no to that. With one last dirty fuck into Hoseok’s ass, making an oversensitive Hoseok squeal, Hyunwoo pulls out. He grabs his cock in hand, wet and slick from lube and his own precome. He snaps his hand over his cock, twisting his hand over his flared cockhead as he’s hurled towards orgasm.

The tension snaps like a frayed band. Hyunwoo sees stars. “Love you,” Hyunwoo gasps as his come starts to splash against Hoseok’s ass and back. His knees tremble against the bed, climax washing over him, heady and overwhelming. He blinks away tears. “Fuck, I love you so much.”

“Thank you, Daddy,” Hoseok gasps and Hyunwoo sags against the bed.

It’s quiet for a moment, only the gentle whir of the aircon cutting through the silence. After that orgasm, Hyunwoo feels like he could sleep for the next few days. But he’s got Hoseok to look after.

He scoops Hoseok into his arms, holding him in a close embrace. Hoseok seems tired, but content, snuggling into his hold. “Thank you, baby,” Hyunwoo murmurs against Hoseok’s hairline. He drops gentle kisses anywhere he can reach: Hoseok’s mouth, his nose, his ears. “You were so, so good for me. Thank you so much.

“It was good for me, too,” Hoseok tells him, accepting the affection gladly, curling up on himself in satisfaction. The exhaustion is evident in his voice, though. Hyunwoo needs to get them cleaned up now, otherwise they’ll pass out like this. The two of them are filthy, Hoseok is absolutely covered in come. And the sheets? Even filthier.

“I’ll start the shower,” Hyunwoo says. He leans in to press another gentle kiss to Hoseok’s temple. “And then I can come out here and change the sheets. Bed after?”

Hoseok nods, sagging heavily against him. “Bed after,” he says. His eyes are closed, but he’s still smiling peacefully.

Hyunwoo will never want anyone more than him.

Before he gets up to start the shower, Hoseok lightly grabs for Hyunwoo’s chin, brushing his lips against Hyunwoo’s jaw. “I love you, too, Daddy.”