2 definitions by Willy Walkenhorst

to move ones hand in an upward downward fashion.
to move the hand like a dolphin jumping in and out of water
In a car when you stick your hand out the window and moving your hand up or down makes your whole arm move like a wave, thats the willy, just not in a car.
Woah, that cool kid just did the willy!
Can you do the willy?
by Willy Walkenhorst June 20, 2006
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