What do you think of me being sometimes a vengeful person?
That's not good. Why do you choose vengeance?
There are a number of reasons. If a person humiliates me, I get really irritated and I will reply with vengeance.
You shouldn't seek vengeance on people. It's better to ignore people who humiliate you. People won't want to be friends with someone who is petty.
I don't want to ignore them. I care about my friends who have made fun of me.
If you care about them, vengeance is not a good way to show it either. Maybe you should just talk to them about how you feel instead.