Dean squeezed his eyes shut as Sam came, choking a little at first. Swallowing because he couldn't pull back, Dean leaned away after a few seconds, the last of Sam's come splattering over his mouth and nose. He was pretty sure he'd officially had ever one of Sam's bodily fluid on him at some point in his life now, and he wasn't sure whether to laugh or to bang his head up the wall.
Licking his lips, his face still messy, Dean pushed himself up and rested on his elbows over his brother, watching him, raking fingers through Sam's hair. "I hope you're proud of yourself, for this," he commented, his voice husky but playful.