The Countdown

A man has a terminal illness and isn't sure how long he has left to live, so he talks to his doctor. The man asks, "How long am I going to live?"

The doctor says, "Depends, what time is it?" The doctor then looks at his watch and says, "10".

The man asks, "Ten what?"

Then the doctor keeps going, "6, 5, 4, 3, 2, 1".