It becomes the same for every word. If you call someone shit or something they made shit, that's not very kind. But obviously just saying "this shit" in an exclamation isn't BAD in itself.

That's just an example. Also, don't joke about lynching someone and use the excuse "I'm black" what if they were also a person of color. What if they had genuinely been threatened irl with that. Do not threaten people at all. Don't say you wish someone drowned, don't say you want to euthanize someone, don't say you wish your pain on someone else. None of that is OK and I will block every party who does it because I do not need that negative energy from EITHER side. None of that.

If someone is immature, don't clap back with being immature. That makes you look just as bad and solves nothing. I learned that last year and I'm surprised some people older than me don't get that