Brian: Peter, You need to learn to be a gentleman. Repeat after me. "Hello, how do you do? What a lovely day."
Peter: Hello, How do you do? After Hogan's Heroes, Bob Crane's head was beaten in by his friend who video taped him having rough sex.
Brian: Well obviously my work here is done. But JUST FOR THE HELL OF IT, let's try again.
Or something to that effect, I can't remember exactly.