I don't even know. I've had this image of Dean and Castiel for awhile... The fault of one of the many kink memes that were going around back when.
Um...Castiel is fallen and finding all the daily mundane tasks of humanity to be inconvenient. So Dean shows him a few of the benefits. WARNING! Watersport. NC-17.
Dean had thought that Castiel was adjusting relatively well to all his new found humanity. It had been a couple of weeks now since the angel had fallen and taken a permanent place at Dean and Sam's sides. He'd seemed okay with it, even happy. Paying rapt attention while Dean introduced him to various foods, the joys of sleeping or of magic fingers, of a hot shower. Porn. The cable variety and the motel pay-per-view variety and the magazine variety. Dean made sure to cover all his bases.
The novelty of being human, though, seemed to wear out for Castiel after about two weeks. Well, twelve days because Dean's been counting. Like he might do something on the one month anniversary of Castiel's shiny new human life. Only Castiel has been sulking for about three days now, picking over his meals and only sleeping when he's practically falling asleep on his feet.
Dean is starting to worry.
Castiel is squirming in the passenger seat of the Impala. They're heading for a motel after leaving Sam at the small local library for a bit of his own brand of down time. Dean's been looking forward to a little downtime as well, flicking on some of the motel porn because masturbating in front of Cas was actually really damn hot, especially when the angel got all hot and bothered in turn and Dean's hoping that this time Castiel will let them get a little more hands on with each other than just watching. It would definitely knock Castiel out of whatever this current funk is. Except that Castiel won't stop kind of squirming his legs together, even as Dean spots a motel and pulls into the lot.
“Cas.” Dean can't hold back anymore. “Something bothering you?”
Castiel's head does that thing where it just swivels around to stare at him. He squirms a bit more and seems to be biting at the inside of his lip for a moment. “No.”
“Yeah, that's a lie. Spill.” Castiel makes a noise of despair and Dean's eyebrows shoot up. His lips wobble as he tries not to smile. “Oh my god, you need the bathroom, don't you?” Castiel gives a wretched nod. “Hang on another minute, I'll get us a room.”
Dean gets out of the car, waiting for the door to slam shut behind him before chuckling to himself and walking quickly to the office. Although a cruel streak to him says he should take his time since they were just in the library which, hey, public bathrooms right there and Cas didn't take the chance. Dean hurries though, just so he can get back to a squirming Cas a little faster.
He comes back with a key in hand and taps on the window of the Impala to signal Castiel to get out. Castiel does, awkwardly and Dean tries not to look too obviously at the way Cas has his legs crossed. Dean grabs their bags from the backseat before nodding Cas towards the room which is about twenty feet away and Dean wonders if Cas will make it. Dean keeps glancing back at Castiel, at his crotch. He walks a little slow.
“Why didn't you say something?”
Castiel sighs and his cheeks pink a little. “I find...the whole ordeal tiresome.”
“You find... Okay. You can't stop it happening, Cas.”
Castiel glares at him like Dean is the idiot here. “I'd hoped to control these...urges some. They're inconvenient.”
Dean pauses at their door, key in the lock, to stare at Castiel in shock. “You're kidding. Man!” He laughs, shaking his head and turns the key, pushing the door open so they can both step through into the room. Castiel makes to step past him but Dean stops him with a hand to his arm. “Sleeping and eating are not always inconvenient, you just haven't learned how to enjoy them properly.” Dean just hasn't taught Castiel the right techniques yet.
“Dean.” Castiel has a bit of a whine to his voice and he glances over to the bathroom door.
Dean shakes his head again, a firm 'no', before pushing the door closed, dropping the key and then dropping his hand to close over Castiel's dick through the jeans he's taken to wearing. Castiel groans in shock and Dean nearly does as well when Cas' bladder just lets go right in his jeans, heat soaking through to Dean's hand. And Castiel must have been holding it all fucking day because there's just so much. Dean rubs his hand, feels the stream of urine which has to be slipping down Castiel's legs by now and Cas moans again.
That's Dean's breaking point and he's pushing Castiel back against the door, hands holding Cas' hips and Dean shoves his thigh up between Castiel's legs. It's hot, so incredibly fucking hot, and Dean's mouth finds Castiel's, latching on as Castiel pants helplessly and his hips stutter up against Dean's leg. Dean wants to get Castiel's jeans undone, get his hand in there so he can feel the last spurts against his fingers but he knows he's too late when Castiel gives a satisfied groan.
“Fuck,” Dean murmurs, stepping back while Castiel sags back against the door. He trails his gaze over Cas' body, down his legs, the dark stain travelling along the inseams of his jeans. “Shower. Now.”
Castiel gives a jerky nod and he's half-stumbling, awkward bow-legged walking, towards the shower. The shower gets twisted on as soon as they're both in the bathroom, letting it have the minute it will need to warm up and then Dean is stepping up to Cas, hands dragging up under his t-shirt. Castiel raises his arms to allow Dean to pull the shirt off over his head, eyes blown wide and bewildered when it's discarded and Dean works Castiel's jeans loose.
“Dean, what's-?”
Dean grins, fingers running over the wet skin of Castiel's cock before peeling away damp jeans and boxers. “Gonna show you some of the fringe benefits to all this 'inconvenient' bullshit. Get in the shower.”
Castiel does, doesn't even hesitate and Dean can see his dick starting to twitch. Fuck, Dean's half-hard already and he tries to will it down for now, making short work of his own clothes so he can join Cas. Castiel's hair is already plastered down, water cascading along his body and washing away the evidence of his 'accident'. Dean kisses him again, presses their bodies together from knee to chest, slick and heaving against each other for a few long minutes.
“Get down on your knees,” Dean whispers. Castiel stares at him for a moment before sinking down, never breaking the eye-contact which is still intense as ever and sends a shiver down Dean's spine. His hands fall loose at his sides, resting palm up against the shower floor, the fucking epitome of submissive and Dean has to, has to take his own dick in hand and stroke once. Castiel's lips part as he breathes deep. “Fuck, Cas...”
Dean almost forgets what his goal was here, dragging the crown of his half-hard dick across the open seam of Castiel's lips. But hell, it's been awhile for Dean too and he grins, works to just fucking relax which is really not hard at all. Feel of his bladder loosening combined with the thrill of arousal. “Close your eyes.” Just like that, Castiel's eyes slip closed and he tips forward like he's figured out what Dean's going to do and can't wait.
The first splash of urine hits Castiel's lower lip and Dean fucking loses it when Castiel's tongue darts out to lick it away before the water can, hips jerking against the grip of his fist so he sprays across Castiel's face and his chest because Dean can't stop now. Castiel looks fucking enraptured, moaning over the sound of the shower and there's so much lust curling up in his belly that Dean's legs nearly give in.
Then Castiel's hand is closing around his shaft and Dean's falls away to wind fingers into Cas' wet hair, to pull him close. Not that he needs to because Castiel is there on his own, nuzzling and licking the last few drops from the tip. “Cas Cas Cas,” Dean chants, hips rocking, growing hard under Castiel's touches. Cas, he notices, is already there, other hand wrapped around himself and stroking. Dean doesn't stop Cas from bringing them both off just a few minutes later.
“I think I understand now,” Castiel says once they're cleaned and dressed in fresh clothes, soiled ones doing a few turns in the motel's guest laundry.
Dean leans back against the machine with his arms crossed and raises an eyebrow. “Oh yeah?”
Castiel nods earnestly. “I think I'd like my next lesson to be with food.”
Dean laughs outright at that. “Why don't we make the next thing be not sleeping alone?” Yeah, he'll teach the angel all about spooning. And maybe early morning sex in the same position if they're quiet enough not to wake Sam.