Please don't treat people like trash. You may not know what they are going through. They might suffer from PTSD, anxiety, depression and some other issues. Not liking a person/their behaviour does NOT give you the right to torment and gaslight that person.
Another thing: If you think that it is ok to hurt people on purpose (that includes "doing it FOR FUN"), you should get off social media, touch grass, and learn some frickin' manners, you uncivilized brutes. I'm only calling the bullies "brutes", not the good guys.