When a nigga keeps the change after running to the store.
Yo Pookey! where my change at?
Nah aint no change, Nigga tax yo!
Noun -- A tax, fee, or charge aimed indirectly toward African Americans typically after or in anticipation of what is considered by some (the power structure) as overuse, abuse, or over-benefit of or from a product, good, service or some other benefit.
A few years ago the City of Norfolk started charging a "nigga tax" at the park, for parking. Since the primary patrons were African Americans, everybody knew it was just another "nigga tax". The city later did away with the parking charge.
The State of Virginia started charging a "nigga tax" on people that braid hair, by requiring anyone that braids hair to have a license, even if working at home, and we all know who that the primary people who braid hair are African Americans.