From Redditor u/Luder714:
Not me, but my 9-year-old daughter has to deal with this girl in her class that is a bully to everyone, though she is especially mean to my daughter. Luckily most of the time, the kids all have her back (and she theirs). The teachers are aware of her issues and try their best, but she's sneaky.
My daughter is Type 1 diabetic, and this girl likes to tease her. She does lots of things, but is really mean about it. She told her that her feet will get chopped off (due to the 'beetus) and other horrible things. One day, she was waving a big chocolate chip cookie in her face, telling her how she can't eat stuff like that because she's a freak.
My daughter had enough. She got up and slapped the girl across the face, and the cookie went flying too. She yelled "Leave me alone!" The whole lunch room went silent, the girl ran to tell the teacher, and the kids cheered.
She came home and told us because she felt badly about it. The girl told the teacher, crying of course, but several students also told the whole story. The teacher told my kid matter-of-factly, "don't do that anymore," and yelled at the girl and made her stay in from recess.
Since then, this girl gives my daughter a wide berth.
I do not condone this behavior, but damn it was hard to keep a straight face when we were telling her that it was the wrong way to resolve things.