Cracker, peckerwood, marshmallow, ofay, casper, buckra, crisco, white bread, redneck, hillbilly, bubba, whitey, honkey, white devil, wasp, white trash, trailer trash, goyim, powder, opie, etc. You name it and I don't really care about it.
The power of racial slurs is the reminder that one race holds more power than another. Given that I am white, and still utterly and completely in the majority, and have no fear of being supplanted from that majority any time soon, I find it somewhat difficult to become particularly offended because someone lobs a term at me that isn't going to bother me anyway.
If Africans had taken whites as slaves, and we still lived in a culture where whites were not just a minority, but at the bottom of nearly every socioeconomic indicator, then suspect having a black man remind me of how unimportant I am by calling me ofay might sting a lot.
But we don't live in that world, so it doesn't.