@Phaedrus, I remember my parents told me if a bully ever threatened to hurt me physically, I should fight back with everything I had. The bully was supposed to get the hint that I wasn't a pushover, so he'd find another victim who was weaker.
I was never a fighter, but I felt like I needed to take my parent's advice seriously. My bully showed up one day and told me this was my day to die. I started flailing my arms and kicking my legs, but nothing had any effect on him. He beat me for a long time before a playground monitor broke it up. His attitude did not change one bit after the confrontation. In fact, it became even worse. What finally ended it was a serious meeting between my parents, his parents and the school principal.