A taxi passenger tapped the driver on the shoulder to ask him a
question. The driver screamed, lost control of the car, nearly hit
a bus, went upon the footpath, and stopped centimeters from a shop
window.
For a second everything went quiet in the cab, then the driver
said, "Look mate, don't ever do that again. You scared the daylights
out of me!"
The passenger apologized and said, "I didn't realize that a little
tap would scare you so much."
The driver replied, "Sorry, it's not really your fault. Today is my
first day as a cab driver - I've been driving a van carrying dead
bodies for the last 25 years."