Comedians who deal in crowd work usually just want basic information they can make funny in the moment or already have a joke about. You being the funny one takes the power away.

I think his episode of the "Beginnings" podcast might mention that. This URL may or may not work. If not, it'll at least point you in the right direction.
http://itunes.apple.com/us/…

"It was a goddamned pile-driver," in the prosecutor's voice pops into my head anytime I see a commercial for a wrestling PPV.