What do you mean by insulting me?

That is to say some ugly words to insult him and make him feel ashamed and humiliated.

For example, when you are chatting with others and talking about Xiao Li, you say that Xiao Li is a person who is worse than an animal. Not only did he not raise his parents, but he also took all the money from his parents' pension and left them to fend for themselves. This is worse than a dog. When Xiao Li heard you say that, he thought you were insulting him, because he was compared to an animal, and his words were ugly, which made people feel ashamed and angry.

However, some people are too sensitive. Even if others don't say anything ugly, and the goal is not themselves, he can still think that you are deliberately satirizing him.

No matter what kind of person the other person is, speak politely, and don't insult a person with words. Out of our own character and upbringing, we should speak to others politely and respectfully.