steel-and-wings:

Oh my God, this my first dirty prompt.  Oh my God, oh my God, oh my God.  Thank you, nonny! I feel big time now.

There are fucking rules when you’re on the road, man.  There are rules about not holding everyone else up, there’s rules about if you’re going to get laid, and there are rules about hogging the damn shower.  And, apparently, Cas doesn’t understand this shit cause he can usually just mojo his ass clean and leave it at that.  But right now he’s drained and forced to use the same facilities as Dean and Sam.

But Cas has been in there for no less than half an hour and some other people would like to get the chance to scrub up before Sam gets home with the next pile of information.  Dean approached the bathroom, fully intending to smash on the door and demand entrance, but stopped when he saw that it was slightly open.

If someone were to ask why he just went on in, Dean would have claimed insanity.  How often did you see a bathroom door open?  It was just…bizarre.  And what else were you supposed to do besides go in an open door?  It’s a fucking invitation!  And what was what he would stick with. 

The room wasn’t particularly steamed up and it was completely silent except for the sounds the water beating down on fiberglass.  Dean turned towards the shower and he wasn’t sure how to feel when he saw that the glass was heavily frosted.  Despite the low visibility, he was distinctly aware of the repetitive motion and what that meant.

“Cas?” The sound came out of his mouth before he could stop it.  Dean took a step forward, watching as Cas stroked his hand over his cock.  If he heard Dean (he had to have heard him, he hadn’t been subtle), he showed no signs.  He just kept on his groove, slowly twisting his hand at his head. 

Dean licked his lips when he heard Cas’ gentle moan.  The hunter felt his dick twitch and knew he was losing the blood in his brain instantly.  This was hot.  Fuck, this was really hot.  Cas brought one hand up to the side of the shower, bracing himself as he fucked into his hand, noises piling up on one another.  He wasn’t trying to be quiet.

Fuck, Cas wasn’t trying to be quiet.

A bolt of lightning seemed to shoot through Cas, halting his motions, his position.  He stayed as he was, back arched and hand stilled, as he let out a sound that was fit for a heavenly chorus.  Dean swallowed and cursed the fact that he couldn’t see Cas spraying the wall. 

After a long moment of everything being perfectly still but the water, Cas slumped his head against his braced forearm and turned his gaze towards Dean.  Even through the frost glass, Dean could swear he saw the intensity in Cas’ eyes.  ”Forgive me, Dean,” Cas panted.  ”I didn’t see you there.”