"Yeah, 'cause it's so easy to hear with your huge thighs as ear muffs," he teased, enjoying the chance to just lean over Sam and look at his face, all flushed and handsome, and the way his pupils were blown in his eyes, from the pleasure. Sometimes Sam's eyes looked brown, other days they looked green, and on really sunny days they looked almost gold. Dean had always liked Sam's eyes.
"Eugh! Sam!" Dean almost whined the words as his face was licked, closing his eyes and wrinkling his face up. "Dude, I swear, it's like living with a dog." And yet he just let Sam do it, and held a handful of his hair as he did.