I wish somebody would mock me, I dont have this experience at all for many years. I wish somebody would do it so I can defend myself properly. As a kid/teenager I was not "adult" enough to defend myself. I assume your are under 18yo, but really, dont let them mock you. If anything, go to the gym so you they will respect you a little bit more :) Or talk about it with them and make them feel bad. If is doesnt help, ignore them or kick their asses. "Not doing anything" is imo the worst option. ​ If only somebody would have told me this when I was younger...