That's a really old joke.
"Why are you always snapping your fingers?"
"To keep elephants away."
"But there are no elephants here."
"See? It works!"
--
Stan Brown, Oak Road Systems, Tompkins County, New York, USA
http://OakRoadSystems.com/
"You may be the Universe's butt puppet, but I'm its right-
hand fist of fate." -- /Wonderfalls/