A bit-part actor finally got his first
leading role
in a major film. In one scene the actor had to jump off
a high diving
board in to a swimming pool. He climed to the top of
the board, looked
down and promptly climbed down
again.

`What’s the matter?’ asked the director.

`I can’t jump from that
board!’ said the actor. `Do you know there’s
only one foot of
water in that pool?’

‘Yes,’ said the director. `We don’t want
you to drown, you
know.’