Joke

A man is on his first parachute jump. He jumps out of the plane and counts, "1 2 3," and pulls the main cord.

Nothing happens.

He pulls on his emergency cord, again nothing happens.

Looking around desperately the man notices another man flying UP intothe air. He hollers to him, "Do you know anything about parachutes?"

"No!" he replies. "Do you know anything about gas furnaces?"