My chemistry teacher in college. She used to throw personal insults. Also when I was young I was very tall and could not adjust myself in tiny enclosed desks. So I had to sit sideways. My maths teacher thought I was insulting her she was so mean and cause such tantrum that day that I eventually left that school. I think she was having a bad day and some personal issues.
I had an English teacher who didn't believe in me. I wrote a really good assignment once and she failed me and told me she knew me and knew I couldn't have written it because I wasn't capable and never wanted to put in the effort.
She was the spark I needed to become a writer. The first poem I ever wrote was about her.
Sometimes I wish I could track her down and show her what I have accomplished in my life. But she's probably too busy killing other children's aspirations to remember me.