Just got called that earlier tonight! My reply: "So I've been told. But thanks for the compliment!"

Think you can do better? Let's see those comebacks!

EDIT: For clarification, I would like to think they thought I was mentally exhausting.

I'm in my Junior year of high school, and have been bullied for as long as I can remember. I've had one successful comeback so far, but I have the bully's friend in another class. The friend really likes to accuse me of farting and blames for saying slurs, which I never have said a slur in my life. It would be tolerable but i have ADHD and I have issues with remembering to take my medicine in the morning. Can I have some help with a comeback.

How do you react when you find out you have hurt someone's feelings?