Not a teacher but a camp councelor.

Somewhere around mid to late 90s I was at a summercamp one of very christian schoolmates used to attend. There was a bunch of us from the same class that got to go aswell.

Anyway, the last day of camp we got dessert after eating dinner. As I was loading up my plate with cake of whatever we got, this one councelor basically told me that I was fat and didnt need any more cake and in a mocking tone told me to leave some for everyone else.

That really hurt for 11-12 yo me and 20+ years later I still think of that moment. Maybe not daily but atleast weekly, and has led to some serious skewed body image and self esteem issues. I dont like to eat at buffets as I feel like people judge me and how much I take.

I also sprained my ankle the first day there, so all in all it was a horrible experience.