I was reading some of the off-site comments and see a lot of people saying that 12 stabbings was overkill. While I agree that, as a number, twelve stabbings was, indeed, overkill, it was also understandable given the circumstances and to those who say otherwise, I merely ask; "You've never been in a fight as a teenager, have you?"
When you're fourteen, your hormones are already completely out of whack and if you've never been trained for a fight, then you're gonna have an adrenalin rush that's gonna cloud judgement. Add in the thought of: "If I don't stop him, he is going to kill me" and you can see why the fucker got stabbed so many times.
Even with adult police officers, whom I hold to a higher standard as they should be trained to control these urges and keep a clear enough head in a fight to know when to stop, have had this happen. I remember hearing once about a cop who swore up and down that he only fired back at an attacking suspect two or three times and had no idea how his 15 round magazine got empty. Another cop thought there were beer cans flying past his face and only realized they were shells from the officer next to him when he saw "Federal" printed on the bottom of them.
You body can do all sorts of shit to you in a fight, so while 12 stabs can be considered excessive, they are also understandable.
That said, I have no sympathy for the bully. I've been bullied often in school, and all I can say is "Garbage in, garbage out."