I'll explain carefully for you.
Do you recall a recent discussion when I pointed out something was racist, It's possible it was sxturbo's use of a term to denote a white person's adoption of black culture, it's a derivative of 'W' and the 'n' word that is so offensive.
You commented that it could not be racist, and you pointed me to a definition of racism in Wiki.
No I can't post up the specific comments, they've all been deleted to save some poster's embarrassment.
Anyway, you were pinning your hopes on the definition of racism as 'discrimination between races'. By that definition racism cannot exist, because there is only one race, the human race.
I have asked you several times to tell us how many races you think there are, within the human race. You've avoided answering each time, because you now realise your preferred definition of racism is nonsense.
So given your obvious ignorance about racism, you can hardly expect the forum to think you are an expert in other offensive terms.
Hence, given your ignorance about racism, you are in no position to give advice on what is offensive and what isn't.