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1. Your Motha's Ass.

2. Also a synonym for "Go Fuck Yourself"
Lee: What's YMA up to later?

Justin: Same thing YMA did yesterday. What do you want to do later?

Lee: YMA
by NassauShores May 19, 2011
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Rich girl with friend in front of poor girl

Rich girl to friend (loudly): Isn't my shirt so expensive?

Poor girl: YMAS >.>
by Coolcoolcool February 23, 2008
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Abbreviation for the amazing band You Me At Six.
Albums: Hold Me Down and Take Off Your Colours.
Just released their new album, Sinners Never Sleep.

This band is amazing! Yeah, it's YMAS!
by asdfghjklyup. October 04, 2011
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A popular abbreviation for You Me At Six. A British Power-Pop band.
YMAS fan 1: Hey, going to the YMAS concert tomorrow?
YMAS fan 2: Of course, they rock! I love Josh's accent.
by Vampish-Electro April 24, 2009
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1)A alternative to your mom used mainly in England
2)It can also be used to insult someones mother
1)Girl: Hey, what did you do at the weekend?
Boy: Y'ma

2)"Look at her, she's so ugly"
"So's y'ma"
by Chargirl Caraway August 05, 2008
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Yahoo's Misfit Army. A group of paintballers that own.
YMA pwns everyone. YMA>All
by hybridballer February 14, 2005
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