Mandatory ugly fat friend. Every hot girl you know in your life has one of these. They are often known has enforcers, body guards, and offensive linemen. Not sure the reasoning behind it, maybe the hot girls want to make themselves look better, but just always make sure you beware of the MUFF...
by J ROG809 October 04, 2010
This word is widely known as another word for a vagina. ALTHOUGH this definition states that the word muff is a shortened form of saying "motherfucker."
by SlamminMuff69 April 27, 2011
Muff: muff is now a very rare species of vagina, it is BIG HAIRY SMELLY FLOPPY STRETCHED WORNO OUt fud, these "muffs" are a dieing species since the invention of mufficide or more commonly know as a brazilian, did you know? each day over 1,000,000 muffs are killed in humanly by being ripped of with boiling hot wax or with a razor or even sometimes laser surgery, you've all heard of save the whales, well now we have save the muff so please with all your heart vote no on mufficide even tho muffs are fucking disgusting lol
"oohh baby i can't wait till u put it in"*pulls down undies* holly fuck!!!!!!!! your 15 years old and u have a great big old hairy fucking muff... man it smells like someones gotten fish and deep fried it in poo u young attractive hagg!
by Sam_big_penis May 07, 2008
a hairy female under carraige.
by bawsack October 26, 2004
when somebody does something stupid, their friends call muff and hit them on the head. can be avoided if that person quickly calls 5/10.
by asdfgihw November 25, 2007
by Portia January 01, 2005
by HappyTimePrincess February 16, 2007