In grade school I slammed his head against a desk when he started picking on others. I was fine ignoring him when he picked on me. It stopped after that.

Earlier in grade school, my dad taught me how to properly punch but I don't remember if it ever came to that.

I got into one altercation with a douchebag. He never messed with me again.

And I slammed an AP bio textbook into another kids head so hard he bounced off his desk back into the book, which was still coming down on the follow through. He was saying truly disgusting stuff about the AP bio teacher, whom I knew outside of school, and was the sweetest, prettiest woman I had known up until that time. Yeah, we all had crushes on her, which was why what that turd was saying enraged me to the point where I grabbed the closest thing and wanted to crush his skull in.