A tourist is picked up by a cabbie in New York on a dark night. The passenger taps the driver on the shoulder to ask him something.
The driver screams, loses control of the car, nearly hits a bus, drives up on the sidewalk and stops inches from a shop window.
For a second, everything went quiet in the cab, then the driver said, "Look friend, don't EVER do that again. You scared the living daylights out of me."
The passenger apologizes and says he didn't realize that a "little tap" could scare him so much.
The driver, after gathering himself together replied, "Sorry, it isn't really your fault. Today is my first day as a cab driver. I've been driving corpses around for the last twenty-five years."