When a black person knows a white person well enough that s/he will let him use the word "nigga" around him/her. Note that it's always "nigga," never the other way, and if overused niggamission can always be revoked.
"Hey, Tyrone, can I borrow your Strictly 4 My Nnnnnn... uh, that 2Pac CD?" "Oh come on, dog, you know you got niggamission."
Committing an act of bitch niggery or comporting yourself in such a way on a daily basis which deserves the title of bitch nigger.
That was some bitch nigganess when clyde rolled up in there, smack talkin' all his homies and tryin' to rub up on their bitches. That bitch nigga come up on my woman, and I'ma go upside his head.