A customer was continually bothering the waiter
in a restaurant; first, he'd asked that the air
conditioning be turned  up because he was too
hot, then he asked it be turned down because
he was too cold, and so on for about half an hour.

Surprisingly, the waiter was very patient, he
walked back and forth and never once got
angry. So finally, a second customer asked
him why he didn't throw out the pest.

"Oh I don't care." said the waiter with a smile.
"We don't even have an air conditioner."