He let out a grunt when he was pulled up into a kiss, a little thrill going through him at the tug--kind of had a thing for that. Just as quick though, he was shoved back down to Dean's cock and he grinned a little bit. Hey, to be fair, Dean had given a great reaction to Sam picking up a book!

"You wouldn't dare," Sam mumbled, giving the other a light lick and not quite taking him back into his mouth. Dean wanted to play it rough? He could give him a bit of a challenge. "You wouldn't be able to resist fucking me, dude, not if I squirmed and moaned enough for you. I wouldn't even have to beg."

He'd like to think he knew how Dean worked well enough now, how to push the right buttons to get what he wanted