@Icaruko I have no idea! I recently put an image into my what'sapp story, with the caption "clean, mfer", and then one of my friends, who's black, said that word is racist. I didn't get why, so I asked, and she proceeded to explain to me, that her other friend's father said the word developed through slaves r****g mothers.
I didn't know if I was supposed to believe that, so I asked my best friend, who's also black, if the word was racist. He said no. He then asked his mother if the word was racist, she said no. And if the word was actually racist and just as bad as the n-word, wouldn't a lot more people know about this? I have NEVER heard any person say the word mfer is racist until now