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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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Jun 24 Word of the Day
An exclamation made when your friends or family are teasing you to a point where you can't handle it anymore and a hissy fit is in order.

Derived from a YouTube user's famed outburst following Britney's lackluster performance at the 2007 VMA's.
Sarah: 'OMG Susan, I can't believe you are wearing the same skirt as yesterday. Oh, and by the way, EVERYONE knows what you did with Kevin on the weekend. Plus you look a little fat, are you retaining water?'

Susan: 'LEAVE BRITNEY ALONE!'
by Billy Chickenhole September 15, 2007
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