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
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make up sex.
when you get on a fight with your boyfriend/girlfriend and then after the fight yo have sex.
gf: the makeup sex mus is the reason why i'm not angry with my boyfriend anymore
by movefreelol March 23, 2012
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Mus is an online handle currently used by (insert steam community link here)
though he has moved on from the squadron to be the best abang streamer, he will always be the abang of the group.

AYE YOU MOT##########################################
###############################################################

-Mus
by DeadEyeRaptor April 21, 2022
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it's acctually the Norwegian slang for "Pussy". (iow, a womans holyness)
The term acctually means Mouse in english. And it does look a bit like one now doesn't it? but hey, how would YOU know!? BWUAHAHAHAHAHA...>_>; j/k
å fy faen den musa va jævli deilig <3(danm, that pussy is hawt o.O)
by anonyMUS D; August 17, 2005
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"MU" (Pronounced Moo) is short for Mentally Undressing.
It is when a person is flirting with a member of the opposite sex whilst staring at their physical form. A witness or a friend of the person flirting must then say aloud the word "MU".
Two friends witnessing a man flirting with a woman.
Friend 1: "That guy is totally MU-ing that woman"
Friend 2: "I know...MU!"

or

A friend witnessing a man flirting with a woman.
Friend (aloud): "MU!!!"
by MNNGJ September 20, 2011
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Person who leaves their friends, neighborhood, state, country, ethnicity, etc. after getting married. A person that changes their life according to his wife's choosing.
Jim became a mus and moved away
by Freinds4Life April 20, 2009
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The finest all boys high school in the south.
Oh, you go to MUS. You guys are so much better at everything than CBHS.
by Lloyd the OWL April 18, 2005
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