The blackest Black there is, it absorbs 100% of light and reflects 0%. For example the colour of a black hole is 'nigger black' as it reflects no light.
There are only two ways of this to be used-- a white ass fuckin mayo monkeyass cracker kid in a COD lobby or a group of black people fucking around with each other.
1: "You black ass nigger!!!"
2: "Jamal woulda been out there pickincotton cus he a black ass nigger."