Thread by @wallmakerrelict

Shiro has a big dick. Like BIG. Last year Matt got tired of hearing how hard it is to have meaningful sex when it won’t fit, and suggested starting a porn site. Guest stars would come on the show to see if they could take it. Amazingly, now they’re making money. #sheith #nsfw

“This is the best stupid idea I’ve ever had,” Matt marvels.

It isn’t what Shiro had in mind when he talked about meaningful sex, but making the videos is a lot of fun. At first they hired pros to perform with him. Now they’re so popular they take applications from the site.

Pidge helps sort through the applications - pages and pages of emails containing photos of men striking sultry poses and bending over, bare asses gaping wide with toys and fingers, trying to prove they have what it takes.

“I like that one,” says Shiro.

The one he points to is a simple headshot, narrow cheekbones and pointed chin and big, gray eyes making for a strikingly attractive young man. He has the focused scowl of one not used to taking selfies, and the wall of a bathroom is visible behind him.

“THAT one?” says Pidge.

“I just like him.”

Pidge scrolls down to the man’s next photo, a wider shot of his wiry body. “Your dick is as thick as his waist,” she says flatly. “You’d kill him.”

Shiro thinks that’s an unfair exaggeration. “Give him a chance.”

When Keith comes in for the shoot he's even more gorgeous in person. Shiro tries to chat and put him at ease, like he does with all the nervous amateurs he works with, but Keith barely makes eye contact with him. He shuffles around the edges of the set, staying out of the way.

Before they get to the action, Matt always films a short interview to introduce their guest star. "Tell us about yourself," he says, crouched behind the camera.

Keith is sitting on the couch next to Shiro. "I'm Keith," he says, and nothing else.

Matt's eye twitches.

No question gets more than a curt reply. Shiro cracks jokes and rubs the back of Keith's neck, trying to get a physical connection started, but Keith just keeps curling in on himself under the glare of the camera.

Matt glares at Shiro. How is he supposed to work with this?

"Do you want to see what you came here for?"

That finally gets Keith to perk up. He seems to forget the camera for a moment as Shiro stands and takes off his clothes. When his dick pops free of his boxers' elastic, it's already half-hard and growing.

In hindsight, it's obvious Shiro is perfect for porn. He's never had trouble getting and staying hard on demand, even under lights and with a camera on him. And his dick is long, straight, and (as advertised) enormous. He isn't vain but even he can see it's gorgeous.

Keith leans forward, his lips parting and his eyes wide. As Shiro swells to full size, Keith reaches out to run slender fingers down its length, tracing the vein that runs along the side. Shiro's dick twitches as he sees how small Keith's hands look next to its girth.

Shiro settles back onto the couch as Keith stands and gets naked. It’s endearing how efficient he is, not bothering to play to the camera even a little as he yanks his shirt over his head and kicks his pants off.

There’s a few kinds of lube and various toys laid out for Keith to prep himself. Most guests moan and writhe as they finger themselves, watching Matt with his camera and twisting to get their best angles. But Keith’s eyes are closed as he lubes up. He might as well be alone.

Shiro is transfixed by the way Keith opens himself up, smearing lube with his fingers and then easing a small dildo inside before switching to a bigger one. He’s methodical, and so quiet, the only sign of effort a crease between his eyes and a lower lip sucked between his teeth.

Matt scoots this way and that, trying to get an interesting angle, but the way Keith is positioned makes it hard to even see the dildo.

Matt mouths to Shiro, “This is not good porn,” with an annoyed face.

Finally Matt says, exasperated, “Could you look at the camera?”

Keith startles and his eyes open. “Oh,” he says, “Sure?” And makes the most uncomfortable, unnerving eye contact with the lens.

After less than a minute, Matt says, “I take it back, stop looking at the camera.”

Finally Keith puts the toys aside and straddles Shiro’s lap. His face is still so serious. Shiro whispers, “Hey,” to catch Keith’s attention and winks. That surprises a genuine smile out of Keith, and a puff of air that might have been a tiny laugh. Shiro’s heart melts.

He’s so unlike anyone else Shiro has ever performed with: he clearly has no interest in looking sexy (though he does look sexy), or impressing anyone (though Shiro is impressed). Shiro wonders why Keith wanted to do this, if not to be a porn star for a day.

As Keith lowers himself down, letting the head of Shiro’s cock slip between his lube-slick cheeks, Shiro resists the urge to reach out and stroke his heaving chest, run a finger over that bitten lip, tuck that stray wisp of hair back behind his ear.

But Shiro isn’t supposed to help his guests; to keep it fair, they have to do it on their own. Shiro strokes Keith’s ankle encouragingly, down where the camera can’t see.

Keith opens up around him to take in the head of his cock, then sinks down as the bulge of the shaft wedges him wider and wider. Shiro can’t hold back a whine. He’s taking it so fast, and he’s so tight, Shiro wonders if for the first time he’ll ruin a shoot by coming too soon.

But Keith doesn’t even make it halfway down the shaft before they both feel him reach his limit, stretched so taut he physically can’t continue. His shoulders are up around his ears and his breathing comes fast and shallow.

Shiro wants to massage the tension out of those shoulders and kiss a deep, steadying breath into those lips. Instead, he grips the back of the couch and waits to see if Keith will figure it out on his own.

But instead of centering himself and relaxing, Keith is coiling up tighter as he tries to drop the rest of the way onto Shiro’s cock by brute force. He licks his lips and bares his teeth, tears pricking the corners of his eyes, still silent but suffering beautifully.

Bending the rules, Shiro slides his hand up Keith’s thigh and murmurs, “Take it easy.”

The blush that’s been hovering on Keith’s cheeks darkens several shades.

He doesn’t admit defeat, so they let him keep struggling for a few minutes before Matt catches Shiro’s eye over Keith’s shoulder and shakes his head. “Not gonna happen,” he mouths.

Not everyone who comes on the show manages to fuck that monster cock. Some of the videos of the failures have more hits and saves than the successes. It’s all part of the gimmick. And most of the “failures” are good sports about it.

It’s common for people in the ending interview to be no casual and funny than at the beginning, laughing in mock-outrage that Shiro’s dick is even bigger in person than it is on video.

Keith isn’t laughing. He looks humiliated and furious, and barely speaks at all.

Shiro lets Keith get dressed and compose himself, but he catches him before he can leave.

“Hey, I’m sorry you’re upset. You shouldn’t feel bad, though. You did really well, and you’re in good company - there are plenty of people who can’t do it.”

“No!” Keith snaps, fighting through his embarrassment to stand up straight and meet Shiro’s eyes. “I *can* do it. I just got nervous with the camera rolling.”

“Look, you don’t have to...” Shiro starts to reassure.

But Keith says again, “I can do it. I know I can.”

He looks so sure, and Shiro is so charmed by his complete lack of artifice, that he answers, “In that case, you want a second chance? I’m free on Friday. Just tell me where to pick you up.”

Shiro pulls into the parking lot at Keith’s apartment complex Friday afternoon. When he knocks on the door, Keith shyly invites him in.

“Actually, why don’t you come with me? Call me old-fashioned, but unless I’m doing the show, I like to take a guy out on a date first.”

On the application form, Keith had listed “astronomy” under his other interests. So Shiro takes him to the planetarium, and is immediately rewarded by Keith’s face lighting up as they walk into the lobby.

“My dad used to take me here when I was a kid,” Keith marvels.

“I haven’t been here in a long time.”

“You like it?”

Keith beams. “Yeah!”

Keith is so different here than he was at the studio under the lights and the camera. As Shiro buys the tickets, Keith gazes at the mobiles hanging from the ceiling in childlike wonder and excitement.

Once in the theater, they choose seats near the edge to avoid the throng of children and parents vying for the front row. The seats lean back so they’re almost lying down side-by-side. As the lights get low, they whisper to each other and wait for the show to start.

Keith isn’t a very chatty guy, but he’s smart and earnest and, it takes Shiro a few minutes to realize, subtly but enormously funny. Shiro begins to recognize what he’d originally been attracted to in Keith’s awkward photos.

When the show starts, they can’t stop talking. It takes several other patrons shushing then before they quiet down and stare at the projected galaxy on the ceiling instead of at each other.

Keith leans across the armrest and puts his hand in Shiro’s.

Shiro loves planetarium shows, but he barely watches this one because he’s distracted by Keith’s body resting so close and the slender hand in his palm. When it’s over, they stay behind while the others file out.

Shiro finally asks, “What made you want to come on the show?”

It’s dark, and they’re alone under the starry dome. Maybe that’s why Keith is brave enough to admit, “I’ve been watching for a long time. I know it’s corny, but my favorite part is the interviews. I like the way you talk to people, how kind you are.”

“Sometimes in the videos, you mention stuff about your life. I know I don’t *know* you, I’m not delusional. But I guess I have a little crush on you.”

Keith sinks lower in his seat, letting the shadows hide his face so Shiro can’t see him blush.

Shiro squeezes his hand until Keith looks back up. “You have me at a disadvantage. I wish I knew as much about you as you do about me.”

A slow smirk cuts through Keith’s blush. “I guess I could spend the next year making a weekly vlog where I have sex with a bunch of guys.”

“Then you could watch it and we’d be even.”

Shiro laughs so loud it echoes within the planetarium dome. “Why don’t we start with a second date instead?”

“Deal.”

“I won’t pretend that was the only reason I applied,” Keith adds, glancing down at the bulge in the seam of Shiro’s jeans.

A planetarium employee opens the door to check for stragglers just in time to catch Keith saying, “You have a really nice dick.”

The employee glares daggers at them, and they scurry out into the bright hallway.

There are some exhibits and information cards in the large reception area, and once Keith recovers from his embarrassment he makes the rounds to inspect them all.

There’s a scale model of the chair and instrument panel from an old space shuttle, the seat tilted at takeoff angle. Keith clambers into the cramped space and sits in the chair, practically upside-down with his long legs scrunched in among the levers.

He’s unbearably cute, smiling like a kid at an amusement park, his cheeks puffy from his inverted position. He’s partly hidden inside the structure, out of sight of the rest of the people in the lobby, and pretty helpless with his legs above his head stuck deep in the gears.

Shiro leans his head in there with Keith. “Can I kiss you?” he whispers.

Keith scoffs, “Why are you asking permission for a kiss when your dick has been in my ass?”

Shiro wants to say something galant about the importance of consent, but he can’t help teasing.

“Not all the way in your ass,” he says with a chuckle.

This time, instead of getting embarrassed, Keith licks his lips and says, “Not yet,” and it’s Shiro’s turn to blush.

“And yeah,” Keith adds, “you can kiss me.”

Shiro kneels and bows his head to kiss him where he lies nestled in the fake shuttle. Somehow this quiet, intimate moment is more electrifying than all their naked panting, sweating, and straining on set the other day.

As Shiro sucks Keith’s lower lip, he finds his eyes level with the wrinkled hem of Keith’s t-shirt with a jutting collarbone peeking out from behind it. He longs to kiss his way deeper into the shuttle, under that shirt, and into the cramped space where Keith’s legs are folded.

Instead he pulls away - he can’t afford to get a hard-on here, with a school group at the reception desk right behind him. His boners are hard to hide.

Keith wriggles out of the shuttle, knocking his elbows and knees in the narrow passage as he slides free.

Shiro scoops him up beneath the armpits to keep him from tumbling onto the floor. After Keith shakes his long legs loose of the inverted chair and gets them back under himself, they end up swaying dizzily in each other’s arms.

“You’re good at dates,” says Keith.

“You’re good at kissing,” says Shiro, hoping for another blush.

But he seems to have overcome Keith’s bashfulness, leaving only hunger. Keith slides a hand up Shiro’s biceps and leans close. “That’s not all I’m good at.”

“You still have to prove it.”

“Then take me home.”

They hurry back to Keith’s place, lips locked as they tumble through the door. Keith kicks it closed behind them and pulls Shiro to his bedroom. “This is better than last time,” he pants.

Shiro runs his hands up Keith’s chest to flip his t-shirt off and over his head. “Agreed.”

Last time, he wasn’t allowed to touch. Now he drags Keith closer by a handful of his hair, the hem of his pants, the back of his thigh. He sucks that gorgeous collarbone as he lays Keith down on the bed. “Lube?”

Keith points. “Dresser. Bottom drawer.”

Shiro roots through the drawer. There’s a bottle of lube on top; he tosses it onto the bed. But he can’t help peeking at what’s underneath it - a nice collection of dildos, vibrators, and other toys. There’s one toward the back of the drawer, bigger than the rest.

“Oh, shit!” Keith leaps out of bed to stop him, but it’s too late. Shiro is already pulling a huge silicone dildo from the pile, oddly familiar in length and girth, right down to the vein running along the side.

Shiro compares it beside his own erection - a perfect match.

“Oh my god,” Shiro laughs helplessly. “I didn’t think anyone actually bought these things!”

Several months ago, Matt had somehow talked Shiro into making a cast of his dick to mold silicone copies and sell them on the site. Shiro never bothered inspecting the finished product.

For the first time, he admires the quality and accuracy of the counterfeit dick. Still unable to stop laughing, he bursts out, “This is why you were so sure you could take mine! You’d already done it!”

Keith, silent, looks like he’d gladly embrace a painless death.

"Hey, it's okay!" Shiro drops the dildo back into the drawer and tackles Keith onto the mattress, smothering him with kisses. "I think it's cute."

"It's horrifying," Keith mumbles from where he lies pinned under Shiro, but he's laughing now too. "It's stalker-level creepy."

Shiro grabs Keith's hips and grinds against him, letting him feel the bulge straining the integrity of Shiro's zipper. "What's better? The dildo, or me?"

"You are," Keith pants, his embarrassment forgotten as he yanks the last of their clothes open and off. "You are!"

Keith tries to wrap his legs around Shiro's waist, pulling himself closer to the cock throbbing between his legs. But Shiro pins him to steal his leverage, and slowly takes him apart with hands and mouth. Now that he has Keith's beautiful body all to himself, he'll take his time.

Only when Keith is warm and soft, arching up to chase the touch of Shiro's lips on his chest, does Shiro slather them both with lube and slide two fingers inside Keith's hole. He's so tight, yet somehow he opens up to accept much more than his frame would suggest.

Shiro knows Keith can take much more than this, he's seen him do it, so he adds more lube and fucks Keith mercilessly with his fingers, smearing lube deep inside and splashing it all over his groin. Keith is quiet, but Shiro can tell how much he enjoys it.

Keith's head is thrown back, his eyes rolled upwards and his hands twisted into the sheets. His chest heaves, but he bites back any sound he might make with his lip firmly between his teeth. His voice is so pretty, and Shiro resolves to make it scream and beg before he's done.

"You want one of your toys?" Shiro asks, slowing his hand to allow Keith to catch his breath. There are plenty of dildos and plugs in the drawer that would make good stepping stones to Shiro's big cock.

"No," Keith whimpers, "I want you."

Shiro doesn't think Keith is ready, but a needy, "I can do it, please!" makes him flip on his back and offer his erection up for Keith's pleasure. Keith straddles his hips and lowers himself down, but this time his problem is impatience instead of nerves.

Overeager, he works himself open too quickly and presses himself down part of Shiro's length before hitting his limit.

"You okay?"

"Yeah, just gimme a sec..."

But Keith's face is pained, so Shiro lifts him off his dick while edging out from beneath him.

"The way you're kneeling is closing you up," Shiro explains, gripping Keith's butt and repositioning him to demonstrate. "It would be easier if you got on all fours."

Keith looks dubious. "Then how do I control how fast you go in?"

"You'll have to talk to me, and trust me."

With only a slight pause, Keith gets on his hands and knees. When Shiro runs a hand up his back and feels him quivering, he gets the feeling Keith doesn't make himself this vulnerable to just anyone. "I got you, gorgeous," he soothes as he nudges against Keith's slick hole.

He works the head of his cock inside with little trouble. The lube smooths his passage as he slowly leans in, letting Keith's tightness yield around him inch by inch. He feels Keith tense, under his hand and around his dick, when he stretches him too far.

"Talk to me, sweetheart," Shiro urges.

Keith stammers, fighting to form words through the overwhelming sensations. "S-stop. Just for a minute."

"That hurt?"

Keith is silent.

"Don't lie to me."

Keith lifts a hand to hastily wipe his eyes. "Kinda."

"I'll stay still," Shiro promises. "I won't move at all. See if you can breathe through it."

But Keith's breath keeps catching in his throat, one shallow gasp after another.

Shiro rests his hand in the middle of Keith's back. "Come on, tiger, deep breath for me."

Keith drags in a shuddering breath, but at least this time he fills his lungs. The stretch and release of the muscles in his chest travels down his lower back, and the tightness around Shiro's cock lessens by a fraction.

"Again."

At the top of Keith's breath, Shiro orders, "Blow out hard."

Keith obeys, and the rebound makes him suck another deep breath in. Soon his gasping has become measured breathing, and his posture is more comfortable.

"I'm gonna give you another little bit, okay? I'll push in as you breathe out."

Keith nods, and Shiro rolls his hips forward to slide another half inch of himself past Keith's taut ring. Another breath, another push. Keith slams his fist against the mattress, overcome.

They're almost past the widest part of the bulge in Shiro's shaft, so very close. "You're doing great," Shiro tells him. "You're almost there."

But Keith is shaking uncontrollably, each breath a quiet whine. "I don't know if I can..." he gasps.

"You want me to stop?" As good as it feels, Shiro is ready to pull out until Keith speaks again:

"No! I want to do it. Please, Shiro, help me get there!"

It's too much. His heart nearly bursting, Shiro leans down to kiss Keith between his shoulder blades.

"Breathe," Shiro orders. Simple instructions that can break through to Keith's sex-addled mind. "Arch your back." A pause between each phrase to give Keith time to internalize the words. "Relax your abs." Keith obeys every time.

Shiro digs his thumbs into the dimples in the small of Keith's back, forcing the tension of the the muscles there. "Open up your hips," he says, and every sinew in Keith quivers to comply.

"Breathe."

Keith breathes.

Shiro pushes the rest of the way in.

Shiro can't help but moan as Keith envelops him, tight and warm. Keith doesn't make a sound, but Shiro can feel him groaning in the twist of his muscles and the break in the rhythm of his breaths.

"You okay?" Shiro grunts.

"yeah..." But it comes out weak, stuttering, sobbing.

That "yeah" doesn't sound in control. Keith hears it too, and it throws him off even further, uncertainty making him clamp painfully.

Now that Shiro's dick is seated inside, the widest part of it past that tight ring, he can't easily pull out.

If he lets fear creep up on Keith, he might not be able to pull him back from the edge of panic.

Pushing down his own worry, Shiro puts on a stern tone. "Try again. You okay?"

"yeah."

A little better. Not great. Keith is still shaking, and so tight.

"Convince me. You okay?"

"Yes."

Much better. Now Keith can hear the strength in his own voice. It feeds back on itself to bolster his confidence.

"Say it again."

"Yes!"

The shaking is subsiding. Keith's tense lines are smoothing out to relaxed muscle. The stranglehold of his sphincter is loosening.

"Again."

"Yes, yes, YES, please, FUCK, PLEASE, SHIRO FUCK ME!"

That shout releases the floodgates, and when Shiro gives the tiniest thrust Keith lets out a moan that Matt would have killed to catch on camera.

"I knew you'd sound hot once I got you to sing for me," Shiro praises him, earning another moan and more pleading.

Even now, with Keith writhing and begging under him, Shiro can't completely give in to his instincts. He'd seriously hurt Keith if he were to pound in and out with his whole length. Instead, he gently rocks his hips back and forth, moving by fractions of an inch.

That slight movement is more than enough for Keith, whose moans turn into screams as he's overwhelmed by the rolling motion deep inside. His hands clench and his toes curl and uncurl with each thrust.

"Please, Shiro, please," he sobs, not knowing what he's begging for anymore.

Keith's voice is intoxicating, his body beautiful, and his ass miraculously tight even as it stretches to accommodate Shiro's intrusion. But more than that, it's the tender trust Keith shows him that make Shiro's body crackle with pleasure. An orgasm creeps up on him unexpected.

"I'm gonna come," Shiro grunts. He would ask permission, except he knows he can't stop it now.

Luckily, Keith moans, "Please give it to me!"

That sweet plea pushes Shiro the rest of the way over the edge, and he loses himself for a moment as he shoots deep in Keith's ass.

Shiro collapses, his weight also pushing Keith flat against the mattress. They lie there, sweat-slick and groaning, until Shiro softens enough to slide painlessly free of Keith's swollen and tender ass. Keith is limp when Shiro rolls him over on his back, weak and twitching.

Keith's dick lies against his belly, made soft by the intense penetration. "You want to come, too?" Shiro offers.

Keith shudders. "can't..." he whimpers.

Shiro takes that as a personal challenge.

Shiro lifts Keith by his ankles, tilting him into the same inverted position he'd taken in the replica shuttle - balanced on his upper back, legs in the air, ass exposed. His poor little hole is gaping and clenching in turns, not quite able to close back up yet.

Shiro helps it by licking gently around the inside of the rim, giving it his tongue to clench around. Keith kicks his legs helplessly as he cries out, so sensitive that even that slight touch is a sweet anguish.

Shiro licks and sucks and fucks the loosened hole with his tongue until he tastes the sweetness of his own come mixed in with the alkalinity of lube and Keith's heady musk. Then he moves up to suck each of Keith's balls into his mouth one by one, followed by his cock.

Keith's soft cock pulses weakly in Shiro's mouth, trying and failing to stand as its owner writhes and sobs with his hands over his burning face. Shiro sucks rhythmically and fondles Keith's balls until he feels something spasm below the surface.

Shiro pulls back just in time to watch Keith come, bucking and screaming, semen dribbling weakly from his soft cock and out of his gaping ass.

When Keith is reduced to pleasure-wracked incoherence, Shiro retrieves the blanket from where they've kicked it to the foot of the bed and wraps it around his shivering body. He holds Keith tight, letting the weight and warmth of his body calm his shakes.

"You did so well, sweet boy, you were amazing," he murmurs in Keith's ear, continuing the praise in an unbroken litany until Keith's eyes finally clear and focus. "How do you feel?" he asks when he's sure Keith is able to hear.

"Kinda dizzy."

Shiro fetches a glass of water.

Once Keith has taken a few swallows, he's able to sit up on his own, though he leans to one side to avoid putting pressure on the sorest part of his ass.

"How was it?" Shiro asks.

"It... wow... it was a lot different from doing it solo."

"Good different?"

Keith tips over to rest his head on Shiro's chest. "Very good."

"You think you're ready to do it on camera now?" says Shiro cheekily.

That sets Keith off on a laughing fit that takes him minutes to recover from.

He's still chuckling when he says, "No more cameras ever. That's your thing, not mine." Then he gets that serious, earnest look again and adds, "I... I'm glad I failed the first time. I'm glad it was like this."

Shiro lifts Keith's bangs to kiss his forehead. "Me too."

fin