Quote from Bob in The M.V.P.
Bob: Knock, knock! Moira: Team? Twyla: Um, a firefighter with back pain? Moira: No, try again. Bob: Knock, knock! Jocelyn: A vacuum salesman? I don't know. Moira: Bob, try to communicate what's written on the paper. Bob: Is-is there a bell I could ring? You know, I don't, I don't wanna be rude, but uh, they could be having dinner.