Material Unaccounted For
"The missing nuclear waste is MUF"
by Randy Piper(aka Shit Goose) March 21, 2005

muf is your butt
by This is the real muffin June 13, 2016

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 15, 2010

Verb (past tense): To lightly or forcefully push the back of someone's head whether aggressively or as a gesture of endearment.
That bitch just muffed me.
by Bridgetspace January 06, 2009

When you get up in the morning and your eyes are crusted shut and you know you should not go on your phone but you do it anyway.
by One off handle June 09, 2020

by deadcaity May 29, 2011
