Top Definition
the muff which surround the anal regions of the anus
"yo man that ho had so much bum muff i had to brush my teef for hours bruv"

"yo mama is just a walkin pile of bum muff. End of biatch!"
by mcfierce June 10, 2006
The muff which surrounds the anal regions of ones anus.
1 My god that is one heck of a lot of bum muff you got there bruv!
2 Your mum eats my bum muff bruv
by cumbubble June 05, 2006
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