The look of annoyance crossing over Raph's expression is just about as harmless as it can get. Mike's trying to lighten things up, he knows that. It's kind of a lame attempt, but you gotta give the guy credit. And it does work to some degree.

"Yeah, that's real funny," he drawls, throwing Mike an incredulous sideways glance. He's still having a hard time looking anyone in the eye, especially Mike. It's easier to just keep his eyes on his busted hand. "Just bind it up and it'll heal."