mu

Mu is another way of saying moo. It is a subsitution of saying any word or phrase. There can be an almost complete conversation of just this word.
Bob: So I hear you think Kristina is hot?
// Jim Shakes head as to say no.
Jim: Mu!
// Bob makes a look as to say "Why not?"
Bob: Mu?
// Jim makes a mater-of-factly look.
Jim: Mu!
// Bob makes an understanding look.
Bob: Mu.
by MuPie December 06, 2004
Get the mu mug.

mu

girl with a long neck, from emu
your friend says hey that girl is fit, u say : that bitch is a mu
by mike February 02, 2005
Get the mu mug.

/mu/

The music board on 4chan. Most of the music discussed on /mu/ is avant garde-experimental-noise-indie bullshit that nobody's heard about. /mu/ users (often called /mu/tants) will flame anybody who likes anything else. Although there is a modest community of metalheads on /mu/ they are generally disliked by the obscure taste flaunting majority that inhabits the board. Basically, it is a big contest to see who listens to the most obscure bands. The less people have heard of the music you listen to, the better.
I went to /mu/ the other day. Never before have I seen so many pretentious tight-wads in a single board.
by musiclover16 May 09, 2009
Get the /mu/ mug.

mus

someone that never fails to put a smile on your face
he makes me laugh, he's my mus
by flowerpower January 22, 2005
Get the mus mug.

/mu/

/mu/ is a music imageboard on 4chan consisting of nothing but heated discussions about metal albums that no-one has heard, rap-hatred, Tom Waits-love, and liberal spamming of Dragonforce or Neutral Milk Hotel songs/album covers/information.

The aim of the board is to prove to others that you have a more obscure taste in music than anyone else. The one who has the most pretentious/obscure taste wins, but no one ever wins. Also posting Insane Clown Posse is an instant fail.

It is also the most pretentious thing since Dragonforce.

Anime_Expert.jpg also originated from /mu/. Whenever someone talks about Japanese music, he appears. Though, the picture is so damn exploitable, it's been modified many times over, and is mainly used when someone makes a statement that is stereotypical of fans of the genre/band. This post is then copied, then posted with the corresponding expert.
Your favorite band sucks. If you've forgotten, /mu/ is happy to remind you. Made exclusively for discussing trv kvlt Black Metal, Daft Punk, and Dragonforce
by Necroyeti April 06, 2008
Get the /mu/ mug.

/mu/

/mu/: Neutral Milk Hotel, Animal Collective, Burzum, Crystal Castles, Neutral Milk Hotel, Animal Collective, Burzum, Crystal Castles, Neutral Milk Hotel, Animal Collective, Burzum, Crystal Castles
by Sffoktn January 28, 2009
Get the /mu/ mug.

MU

A "Member Update" on any sort of forum or message board. They are usually weekly or bi-weekly, and they log the post gains of the members on a certain board. Top spammers spots are coveted.
by gtiff123 April 21, 2005
Get the MU mug.