I'm going to humiliate my best friend in front of a group of friends as payback
Do you have a reason for this? Did he do something?
I don't think I have to tell you.
You shouldn't try and embarrass your friends in front of other people. They could get really upset at you.
I don't really want to listen to you anymore.
It can be really hurtful to embarrass them. You should talk to them and tell them how you felt when they hurt you. They might not even be aware of what they did.