look up any word, like sapiosexual:
 
1.
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)
by gangster gay December 28, 2010
3 0