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1.
The act of instantaneously beefing someone after some nigga makes genuine conversation. Usually involves a human of the female gender.
Guy 1: Mad wheels dude!
Girl: BULLSHIT. GO FUCK YOURSELF! THIS MAN IS TALKING TO ME PURELY PROFESSIONALLY

Guy 2: Ma nigga! Looks like a serious case of some instabeef here!
Guy 1: I know man, I'm out!
by nig4eva January 20, 2013