I posted this in another thread. Sometimes you are left with no option.
At school I was short and scrawny. I was bullied because I was an easy target but I
took a stand. I had taken enough after being bullied for years (started in primary school and went on into high school till I was 13) so after one particular episode in which the last lesson of the day (woodwork) I had my bag nailed to the desk I snapped. I stood there and demanded that the person who did it remove it and give me it back. It just so happened it was the alpha male who all the others followed, the 'hardest' kid in our year. So he walked up to me and asked me what I was going to do about it. Now I deplore violence, and I would never advocate it but at the time my head just went. I grabbed him in a headlock and dropped to my knees, I repeatedly punched him in the face then smashed his head into the floor.
I got away with a warning after the head teacher found out what had been going on and someone, whom I never found out who it was, came forward as a witness to the bullying. Needless to say, no-one ever bothered me again through school. They just spoke about me behind my back, which I didn't mind because they weren't physicaly attacking me or messing with my stuff anymore.
But like I said, I do not advocate violence in any way shape or form.