"Pilot Pieces" joke

How many pilots does it take to change a light bulb?
-- Just one. He holds the bulb and the world revolves around him.

How do you know if there is a pilot at your party?
-- He'll tell you.

What do pilots use for birth control?
-- Their personality.

What is the difference between a pilot and a jet engine?
-- A jet engine stops whining soon after landing.