Ricky: By the way, what was the terrible accident on the streetcar?
Fred: (laughing) Wouldn't you like to know!
Fred: Well, I'll tell you anyway. But remember, this is my best gag and you gotta promise not to use it.
Ricky: OK, I promise. What was the terrible accident on the streetcar, Fred?
Fred: Well, a man had his eye on a seat and a woman sat on it. (Ricky looks away in disdain while Fred laughs) What a pipperoo! Remember now, you promised not to use it.
Ricky: That's one promise I will never break.