1 definition by gangster gay

Top Definition
The act of slapping your sexual partner in the face with your genitailia
guy 1:what did you do last night?
guy 2:oh, i gave lisa a good Wallywack.
guy 1:hell yeah man!
(this is the time where you initiate a high-five)
#penis #wack #sexual act #hit #french
by gangster gay December 28, 2010
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