True story: I did martial arts as a kid, and one thing that instructors teach you is that breaking someones nose will finish the fight.

Years later, at a party, I got into a fight with a punk (I mean a real punk, with a stupid haircut). He was acting like a twat, bothering people, like they do, and I told him to piss off and he headbutted me in the face, breaking my nose. And actually, while not something you'd want to happen every day, it's not too bad, a lot of blood but it doesn't really hurt. Then I kicked his ass.