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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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3
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 07, 2007
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4
To go muffing is to go out on the pull, i.e. with the intention of getting laid (generally used for guys.)
Guy 1: Are you muffing tonight?

Guy 2: Nah, I have a girlfriend mate.
by Follers January 08, 2010
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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 08, 2013
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6
The act of performing oral sex on a woman who doesn't shave her pubic hair. Originated from the town of Muff, in Ireland.
"So what'd you get up to over the weekend?"

"Oh, nothin' much. Just a lie in, and a bit of muffing the wife
by Spoovo August 25, 2015
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