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2.
you're a gangster. or, "you're a gangsta" according to white people who think they're ghetto.
"hey yo, you a g!" (meaning you're cool/tight/awesome/seeming to be from the ghetto)
by G Gab June 20, 2006
 
1.
Under Age Gash
Hirst was cracking on to some UAG again last night
by Evans July 24, 2003