I was so angry that I ended up choking three of my classmates.
That's awful! Why would you do something so violent?
That motherfucker and his other friend badmouthed me and my friends. They called us outcasts.
It sounds like you were trying to defend your group, but that's a lot of excessive anger and you may want to talk to someone about it. It's never okay to hurt someone else.
I don't need to talk with dumb fucks.
I understand not wanting to talk to a therapist, but you really should because it sounds like you have an anger problem. It's not normal to choke three people after they tease you. Resorting to violence that quickly is never good and something you need to work on.