Your Ego needs to make up for whats in your pants?

I, a at the time 15 year old, was bullied from fourth grade for being a little overweight and a nerd. In nineth grade my bully, lets call him Jay, was placed in a different class to be with his friends who also liked to talk shit about me. A few weeks go by without any notible incident, which was weird because there was no way Jay and his friends would stop with their favourite activity now.

Now, I'm not a person to just forgive and forget and always looked for some of Jays insecurities because physical damage didn't work, so i always tried to listen to what they were saying. One day, i picked up he had a relationship with a girl and after they almost had 'their first time' she broke up with him because of his small phallus. They were casually talking about it during lunch break and my friends and me sat on the table next to them. I just made a mental note for the next time they decided they had nothing better to do then picking on me.

Not even 2 days later, again during lunch break, i was sitting next to my bestie when Jay and one of his friends turned up and started to talk shit about me but not directly to me. My friend wanted to say something but i signaled her to stay quiet. At some point Jay turned to me and casually asked: "Hey, do you know what a diet is?" or something along those lines. I stayed silent like i hadn't heard him. Just so you know, the cafeteria was fairly crowded so he bought it and repeated what he said, louder this time. A few other students turned their head to witness the most embarrasing moment in Jays life.

This time, i turned to look at him, rolled my eyes and got back to my lunch. He didn't like to be ignored ans said "What, do you? Or do you like being a big fat b-word?" I turned back to him and said in the loudest voice that could still be considered casual: "Sorry, i think you should shut the f up until you yourself don't have a FMI smaller than you phallus lenght in millimeter"

side note:

1) Jay was even 'bigger' than me and seemingly continued to gain weight in the next years while i lost a lot at that time

2) we had biology class before talking about ED's and FMI

He immedeatly went quiet as the room broke out into laughter. There were like a houndred students along with some teachers. Jay wanted to leave with his friend but the friend was laughing his butt off. Didn't see him the rest of the day so i assume he left but the joke followed him until he switched school due to his horrible grades. From 5th to 12th grade everybody knew him as the guy with the small d-ck...

Safe to say, I was never bullied again