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It's a long abreviation for, Illiterate Bitch-Ass MotherFucker. Starting from the I, to the F it means: Incompetent,/unable to read or write, punk related, or to be a "pussy", to fuck your own mom, or to be a person, place or thing.
Dude 1: Yo, wigga, i beat dat stank ass if you keeps talkin dat shit hoe

Dude 2: Man, he is an Ibamf
by r3d/flash October 28, 2009
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