A habitual slot-machine gambler, also a drunk, staggered into the Automat.
He walked up to the sandwich section and deposited some nickels. A ham
sandwich popped out. He deposited more coins, collecting more and more
sandwiches. The manager walked over to him and said, "Pardon me, sir, but
why don't you stop? Haven't you got enough?" The drunk turned on him and
said, "What? Quit when I'm on a winning streak?"
-- Joe E. Brown
A customer was bothering the waiter in a restaurant.
First he asked that the air-conditioning be turned up because he was too hot,
then he asked it be turned down cause he was too cold and so on for about
half an hour....