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
by BC Ted August 9, 2003
A derogatory word used to describe simultaneous oral sex between two lesbians, often referred to as 69.
by Mr Muff April 8, 2007
by Giggles124 April 8, 2013
by BandyE May 9, 2016
Phooh, she's / he's absolutely muffing !
by Muffindamule October 1, 2006