M.U.

M.U. Mutual Understanding. This meaning can be defined in two ways:

a. 2 people like each other but aren't in a relationship
b. A talking stage between two people who like each other

N: Hey, aren't they a M.U.?

by Rocksssssssssssssssss October 23, 2022

M.U.G.E.N Creators

An extremely rare group of people that make things for the fighting game engine MUGEN. Leechers continually pester these people if creations are kept private. "Elitist" creators are labeled many derogatory names because they make things for themselves, for fun and don't care what others think about them. Many creators go private after their work is warehoused and distributed without proper consent from the creators. Some quit, which is understandable, because, like most people, they have lives.

Not all creators are of the elite. Some steal various parts of others' work and post it as their own. These "creators" are what brings the community down.

That and Brazil.

Creator A: I just made Creation-A. Here Creator B, I'll send it to you because I know you and trust you.
Creator B: Why thank you.
Leech: M.U.G.E.N Creators suck! I wunt it too for my complete game!
Brazil: I can make better version with full screen effect!

by 2D Mirage April 18, 2006

M.U.F.F.

Mandatory Unattractive Female Friend. every group of 3 or more girls will have one, oftentimes in groups of two, there will be one one hot one, and one MUFF. for the MUFF, there is the wingman!

she's hot, but her friend is a MUFF

by JMGL February 16, 2004

M.U.G.E.N

A freeware game-creation program that can allow you to create complete fighting games from scratch. There are MS-DOS and Linux versions available on the Internet.

There are few original M.U.G.E.N games, characters, and stages on the Net because most people are so lazy that they just rip sprites and graphics from commercial videogames, and make characters and stages out of those.

by AYB March 11, 2003

M.U.I.

Masturbating Under the Influence of drugs or alcohol. Sometimes even better than sober sex.

Dude get out of here im M.U.I.ing!

by ABC Jenkins January 23, 2010

M.U.P.A.

Muscular upper pussy area

She’s been working out so much you can see her M.U.P.A. through her yoga pants.

by MoneyMercenaryMike August 27, 2018

M.U.P

Man Up Pussy. For all of those people in your lives who annoy you and you just don't want to hear it anymore you will use the word M.U.P

Aaron "Man my back really hurts from working at hyvee"
Alladin "M.U.P"

by alleb32 August 17, 2011