Fat.
Tell me, does this anger you?
Because oh boy, is this gonna happen a lot in the future.
No matter if you look like a twig, a ball or have a perfect hourglass shape, kids are kids. They call eachother gay, fat, fatherless, and such, and forget about it the next day.
Thats normal, from the beggining of the existance of schools.
See, there is a girl in my class. The avarge "uwu, anime, genshin impact, kawaii" one, if you know what I mean. That cries and stutters because she wants to be in an anime. And oh boy, is she sensetive. Someone called her sus, and she started sobbing. Guess what happend next? Even more, worse insults than sus. She was basically the new amusement to them, because she acted like a monkey. And oh boy, did they treat her like one from that moment. Dont let stupid things like this affect you. Stop worrying about your thights, and love and notice yourself more perhaps?