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Similar to assuming someone is on steroids because of their amazing skill or performance in a sport, but in this case its just because they are black.
Chuck Norris: OMG check out BRASSMACH1NE's kill streak on Call Of Duty ModernWarefare2!
Morgan Freeman: He must've been on niggroids!

Epic Beard Man: Lebron James is a beast at basketball!
Ugly Bob: Yeah but its only 'cuz hes on niggroids!
by Garren S. March 04, 2010
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