"Don't Nigger Turn into my driveway it fucks up the curbs jackass"
Could possibly have been coined because of blacks in the early 60's financing Cadillacs and being unable to drive such a big car, necessitating a wide, arching turn at intersections, causing racists to call it a "Nigger Turn".
Guy #2: That was a major Nigger Turn!
Guy #1: He covered every lane with that turn... biggest Nigger Turn I've ever seen!
Guy #3: That was an Asian guy, not a black guy!
Guy #1: Dude, it doesn't matter what color person is driving the car, if you turn and sweep every lane, that's a Nigger Turn!