A little groan accidentally escaped Dean's lips as he watched Sam's hands glide over the barrel of the shotgun, getting ready to disassemble and clean it. Sam jerked his head up to where Dean was sitting on the bed with several pieces of another gun laying around him and then furrowed his brows in concern.

"You okay?"

Embarrassment came over Dean at how ridiculous and needy that moan of his had sounded and he coughed into his tightly balled fist and then picked up a random piece of gun that he was sure he'd already cleaned about three times. "Yeah, fine."

Sam shrugged and looked back down at the gun, his hands moving deftly as he took it apart, neatly leaving each piece on the desk in front of him with the kind of skill that could only come from years of intimate knowledge of the weapon. Dean shifted on the bed and opened his legs a little wider to accommodate the growing tightness in his pants; with all that they'd been doing with their latest case, Sam hadn't shown that kind of intimate knowledge for him in almost a week. His brother's eyes were focused as his hands quickly worked their way into every dirty nook and cranny of the gun, smearing his fingers with gun oil and black soot. Last week in the shower…mm, the way he used those hands and mouth of his to help him work all the tension out of his body…fuck, he wanted to reenact that right at that moment. But they couldn't; Sam had to fix his sawed-off before he left in the morning to follow up a lead on their hunt and he needed to finish doing a check on a few other weapons. He groaned internally and then looked down and began to reassemble his weapon, moving in swift, agitated motions, when he suddenly heard Sam cry out.

"Ow! Shit." Dean looked up to see Sam move his index finger to his mouth and lick a drop of blood from it, his tongue darting out of his mouth and swiping along the pad. "No wonder this gun isn't firing right, it's all w-"

The rest of the sentence came out as a jumble of muffled, incomprehensible syllables as Dean raced over to the small desk, leaned across it, and kissed him so hard that his chair nearly tipped over. Fuck it, he thought, he'll leave later; a man's got needs. The gun fell back onto the table and Sam's hands flew up into the air to steady himself as the chair tipped back, but Dean held him in place and kept him from falling as he assaulted his mouth with firm lips, sweeping tongue, and clanging teeth. He felt Sam's lips begin moving against his almost immediately but slower and more gentle, trying to soften the kiss. Dean slowed down for him but the kiss kept its hard intensity and few seconds later Dean pulled away.

"You taste like blood and gun oil."

"Yeah, you saw I cut myself, right?"

Dean looked down at Sam's long fingers. "Mm, yeah, I did." He brought Sam's middle finger to his mouth and laid an open-mouthed kiss on it.

"Dude, that's gross; my fingers are coated in gun oil."

Dean kissed down Sam's finger and palm. "Undo your pants for me and I'll kiss you somewhere else."

Sam's breath hitched and Dean then looked into his eyes to see that Sam's face had already turned serious, his eyes wide with unabashed want. Without a word, Sam quickly undid his belt and then the button and zipper of his jeans and then pushed them and his boxers down past his knees, allowing his already hard cock to spring free. He pushed his chair back and away from the table a couple of feet, then slid his hips forward and let his legs fall apart. God, it was so fucking hot that he could get Sam worked up so fast, that he could get him to do what he wanted so easily just because he craved him that much. Dean got down on his knees between Sam's legs and pushed his jeans and boxers the rest of the way down his legs until they were pooling around Sam's ankles and then laid open-mouthed kisses and nips up the insides of Sam's left thigh before moving his mouth quickly to Sam's shaft, where he licked along a blue vein on the underside from the base to the tip. When he got to the head he then licked around the crown and along the slit, tasting just a hint of salt from a little bit of pre-cum that had already managed to leak out. He looked up to see Sam watching him, staring at his mouth and the way he was teasing him with his tongue and for half a second Dean considered being a real cocktease and working him up a little more before pulling away so he could make Sam beg for it, but he'd really been wanting to do this to Sam for too long and so he decided against it. Instead he slid the head between his lips and sucked on it for a few seconds before sinking his head down further and beginning to move back and forth on the thick, long shaft while he gripped the base in his hand and began to stroke everything that didn't easily fit into his mouth.

Sam left out a sigh as if he'd just been given to answer to a long-awaited prayer and let his head fall back on his seat as he closed his eyes. "I don't know what's gotten into you tonight, but whatever it is, I like it."

Dean slowly slid his mouth back and off of Sam's cock. "Look at me; I want you to watch."

Sam looked down and Dean stared up at him as he once again wrapped his lips around the shaft and began bobbing back and forth on it. He saw Sam's eyes and how clearly turned on he was and it only worked him up and encouraged him all the more. He moved his free hand down to his own jeans and quickly undid them, then brought out his own cock and began to slowly stroke it.

Sam made a sound halfway between a sigh and a moan and then licked his lips. "I come too quickly when I watch."

Dean once again pulled away from Sam's cock and then began gingerly licking the tip. "That's okay; I have a bunch of things planned for you tonight."

A glob of pre-cum streamed from Sam's head at hearing those words and Dean smiled and eagerly lapped it up. Dean slid Sam's cock back into his mouth and gave it an extra hard suck, eliciting a moan from Sam who then let his head fall back for a second before he quickly snapped it back down to obediently watch.

.

Two hours and one embarrassing call from the front desk asking them to quiet down later, Dean's flushed, sweaty body collapsed against Sam's and he let out a contented sigh before he gingerly pulled himself out of Sam's ass and rolled off of him.

Sam smiled wide, showing all his teeth and let out a little laugh. "Shit, Dean. Like I said; I don't know what suddenly got you so turned on tonight, but…" He turned on his side towards Dean, threw an arm over his chest, and kissed him on the side of the mouth. "I really, really like it."

"Just you, Sammy." He reached up and firmly gripped Sam's hand. "You got no idea what you fucking do to me."

"Guess that's a good thing because if I did, I'd do it 24/7"

Dean smiled and then turned to Sam and kissed him on his bright pink, kiss-swollen lips. "You already do."

.

Thanks for reading! I plan to make this a multi-chapter about all the little things that Sam does that turns Dean on, probably all PWP like this one. I hope you all liked it and I'd really like to know what you thought, whether you liked it or not! I gotta admit, I'm blushing a little right now; this chapter somehow feels filthy, even for me, so I hope it's alright.