Top Definition
MUF
Mandatory Ugly Friend
Every woman has a MUF
Beküldő: Junkyardjimbo88 2003. június 27.
An acronym for the very serious disorder: Messed Up Face Syndrome.
"Ew that was the ugliest girl I've ever seen in my life."
"Yeah, she has a bad case of MUFS"
Beküldő: elly zass 2009. november 28.
muf
someone who does not know the meaning of the word is a muf, until you know what it means you are one.
fred: "what's a muf"?
george:"you're a muf"
Beküldő: youre a muf 2010. november 21.
Muf
muf is your butt
Does muffin have a muf on his muf

Sit on your muf.

Nice muf cutie lol fuck that one.
Beküldő: This is the real muffin 2016. június 13.
MUF
MUF -

Abbrieviation of "Make-Up Failure".

For those girls who slap on the bronzer, and foundation, for those girls who have abnormally rosey cheeks, and for those girls who have eyes as black as the night.
1)

Girl 1: HAHAHA Did you see Jenny today?

Girl 2: Yeah, i mean what a MUF!

2)

Boy 1: I fancy some girl in my maths class... but i don't know what to do, she's such a MUF.

Boy 2: NO MAN, you can do so much better.
Beküldő: MCLIV 2010. január 14.
Muf
Material Unaccounted For
"The missing nuclear waste is MUF"
Beküldő: Randy Piper(aka Shit Goose) 2005. március 21.
muf
Multi User Forth

Advanced coding language used on MUCKs. When used by Zirik, it causes flooding.

MUF is frequently used when MPI proves insufficient to perform a desired function, as it has much greater capabilities. However, most consider it more difficult to learn.
Zirik wrote a program for underwater realms in MUF and inexplicably drowned the entire population of the MUCK.
Beküldő: Zirik 2005. április 18.
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