Draco laughs darkly but quietly still. It's nice to watch Billy just wiggling there in his bed. He toys with himself and consequently them both a little more before he lets up again.

"I know. It also works on multiple people... if you're into that sort of thing." Releasing himself for now, Draco leans in enough to draw a circle of heat with his tongue on Billy's left cheek, since it's right there in front of him.