when you put brass knuckles on your hand and fist a girl up the ass.
I got a brass ass last night from billy.
by Tampon December 9, 2006
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It means to talk shit and then kick ass, like a badass. {This phrase was invented by Mario Y. Castillo in Saturday, December 20, 2014}
Just go out there and talk brass and kick ass to that MoFo, and shine like a badass.
by supadupamarioy December 20, 2014
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The equivalent of patting oneself on the back, or blowing one's own horn.
Not to brass my own ass, but I aced that quiz, and I didn't even study for it.
by Urban OP August 16, 2018
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