Definitions by Anus Beeker
muff butt willy
The bearer of a muff butt, which is an unsightly patch of pubic style hair growing from and above the crack of one's ass.
muff butt willy by Anus Beeker August 13, 2007
muff butt
A thick patch of pubes (pubic hair) that resides just above, and into, the crack of ones ass. This is not in reference to a small bit of hair, but rather to a patch of some considerable girth.
In playing basketball, using the traditional shirts and skins method: "I don't want to guard him on the post, he has a total muff butt."
muff butt by Anus Beeker December 30, 2006