A Nigga Moment is when the mind of a perfectly rational black man is overwhelmed by ignorance. Which caused him to act in an illogical self-destructive manner. I.E., like a nigga. Nigga moments are unpredictable, but they all end up bad.
If they have their own category, Nigga Moments could be the third leading killer of black men behind Pork Chops and F.E.M.A. It's a fact.
A nigga steps on another nigga's Jordans.
Nigga #1: Nigga, you step on my shoe!
Nigga #2: If you ain't in my way, this would've happened, Nigga!
BAM! A Nigga Moment is born.