Well, I don't think it works the same way with racial slurs or something. I don't think people go around calling white people niggers to mean 'white people acting like unpleasant black people.' (though I've heard it used like "So don`t fool yourself you`re helping with your white liberal shit / If you care to take a closer look at the way things really stand / You`d see we`re all just niggers to the rulers of this land")

All I mean by historical associate is that the meaning of the word takes it's idea of 'unpleasantness' from something associated with femininity just like bitch does. They're still that knowledge that it was associated with women, but it doesn't mean woman anymore, denotationally. Or it's starting not to. I would like to see it not, because I think preserving that meaning is more conservative.