A passenger in a taxi leaned over to ask the driver a question...

A passenger in a taxi leaned over to ask the driver a question and
gently tapped him on the shoulder to get his attention.

The driver screamed, lost control of the cab, nearly hit a bus, drove
up over the curb and stopped just inches from a large plate glass
window.

For a few moments everything was silent in the cab.

Then, the still shaking driver said, "Are you OK? I'm so sorry, but you
scared the daylights out of me."

The badly shaken passenger apologised to the driver and said he didn't
realize that a mere tap on the shoulder would startle the driver so
badly.

The driver replied, "No, no, I'm the one who is sorry, it's entirely my
fault, today is my very first day driving a cab.

I've been driving a hearse for the last 25 years.