Nigga slap
The sound produced by the testis when a large, often muscle-bound black man is anally demolishing a stupid pot head teenager with his 12" monster. The black guy doesn't do it because he likes it, it is because the douche bag rich kid doesn't. It is a loud, audiable slap against the gooch area by the testis, often leaving a red silhouette of the black guy's balls.
The muscley black dude totally nigga slapped that dumbass pot head as punishment for looking at his Asian girlfriend.
Nigga slap by Tyrone Bishop May 1, 2006