He bit his lip at that swat, though it wasn't really enough to really hurt or anything. He tipped his head forward a little bit and shifted. "Shut up, jerk," he protested lightly at the comment. Yeah, okay, so he was liking it a little.

Even if it was embarrassing to be bent over his brother's lap, letting him spank him... honest to God spank him. He wasn't going to get into the reasons why that was a turn on though, wasn't going to dissect it. Just wanted to enjoy it and see where Dean went with it.