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Over-zealous and obnoxious behavior over the slightest of achievements.
Football Fan #1: "Wow look at that dance T.O. is doing after making that five yard reception."

Football Fan #2: "They should throw a flag for flagrant Negrocity."
by hwbgator1 July 16, 2008
an atrocity commited by an african american.
By pissing on my car that black man commited a negrocity
by Shzaam August 06, 2007