A passenger in a taxi tapped the driver on the shoulder to ask him something. The driver screamed and lost control of the cab. He nearly hit a bus, then drove up over the curb and stopped just inches from a telephone pole.

For a few moments everything was silent in the cab, then the taxi driver said, "You scared the daylights out of me."

The passenger apologized and said, "I didn't realize that a tap on the shoulder could frighten someone so much."

"Well, today is my first day on the job," said the taxi driver. "I used to drive a hearse."