I guess if Bobby Bully is putting beans in your pants you can try your karate kid routine on him. Maybe Eye of The Tiger will start playing and after you make him cry by ballet kicking him in the nose you and Elisabeth Shue can go share a milkshake at Pop's and then make out at the drive in. But in real life Jesus and Jose and their 20 cousins and homies just show up after school and steal all your clothes, your bike, your money and throw you into the dumpster.
I guess I don't ever really believe these stories, because whenever i've seen someone fight back it just turned into a drawn out war, not some fairytale DeGrassi afterschool special outcome where the bully "learned his place"