Groucho: What do you get an hour?
Chico: For playing, we get-a ten dollars an hour.
Groucho: I see. What do you get for not playing?
Chico: Twelve dollars an hour. Now for rehearsing we make special rates. That's-a fifteen dollars an hour.
Groucho: And what do you get for not rehearsing?
Chico: You couldn't afford it. You see, if we don't rehearse, and if we don't-a play, that runs into money.