Director: Hey, butt guy, what are you doing?

Joey Tribbiani: I’m showering.

Director: No, that was clenching.

Joey Tribbiani: The way I see it, the guy’s upset here, you know? His wife’s dead, his brother’s missing. I think his butt would be angry here.

Director: I think his butt would like to get the shot before lunch.

From Friends – Season 1 Episode 6: ‘The One with the Butt’ (1×06)