If a street nigger pulled his malt liquor bottle away from his bumper lips and broke it on one of those nigger benches and then stabbed some caucasian people, that would be a good example of someone being nigger knifed.
A verb most commonly heard in online FPS (First-Person Shooters.) It is the act of stabbing another player or person with a knife and thus killing them instantly.
Guy:Damn, some noob came up behind me and knifed me.
Verb- to get stabbed anywhere in the body from the top of the skull down
Johnny stood on the corner of 125th and Martin Luther King wearing a t shirt with large print reading I hate black people, and laughing about it. A good samaritin kept him from getting knifed by a few nanoseconds.