Top definition
A person who enjoys slapping his penis
Abe's cock is sore because he is a willy slapper.
by Love Monkey January 18, 2006
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2
Someone who slaps their willies against another man, possibly while the victim is asleep or drunk.
"That Daniel from Streetcar, he's a Willyslapper he is!"
by Joshua Sanders July 05, 2008
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