a sexual act that may or may not be popular with trans women, according to Miranda Bellweather in Fucking Trans Women #0 muffing is the sexual act of penetrating one or both of the inguinal canals.
I LOVED muffing her last night
by censation December 14, 2010
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forcefully placing the female genitals over the mouth/nose.
He needs a good muffing.
by BC Ted August 9, 2003
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A derogatory word used to describe simultaneous oral sex between two lesbians, often referred to as 69.
Susie hasn't gotten any all week. Tonight she's getting drunk and going out muffing.
by Mr Muff April 8, 2007
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Muffing is the new Mudding - since iPhone decides to auto correct everything!

- giggles
example: "Mo-reece is going muffing today in his friend's amazing Rubicon"
by Giggles124 April 8, 2013
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Long established Royal Navy slang for cunnilingus.
Alternative: Muff diving.
The bosun's mate got caught muffing a split (female) sailor in the cable locker.
by BandyE May 9, 2016
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To smell like one hasn't washed for a few months.
Phooh, she's / he's absolutely muffing !
by Muffindamule October 1, 2006
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