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A name given to an overly douchebagish person. Usually he/she will spend the day listening to, and I say loosely, "artists" such as Stephen Jerzak and NeverShoutNever; Hence, thinking he/she is cool. Unknown to him/her, he/she is a social reject. Known to makeout with 2 boys in the same night, several times. Also is known to have a group of friends named "The Wolfpack", all of which are also known to be homosexuals as well. He/She has no life as well. If you know a Shaftmouther, you should usually lynch them as soon as possible.
Billy: Hey, what's that?
Joe: That's a Shaftmouther.

Billy: Oh shit, get the torches, let's burn that motherfucker.
Joe: Yeah, BURN THE FAGGOT!
by NotZachWonders March 29, 2010
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Jun 20 Word of the Day
Marginalized Orientations, Gender identities, And Intersex. it’s meant to be an all inclusive umbrella term for asexuals, homosexuals, multisexuals, trans people, and intersex people. Alternative to LGBTQIAP+
Alternative to MOGII, easier to pronounce.
The MOGAI community in my city is very friendly.
by sebasty September 04, 2014
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