First off, I really don't put myself in situations that could lead to a fight. I'm stronger than most people, very coordinated, and a good athlete. If I actually got pushed to the point of fighting, something really bad could happen with a punch landing in the wrong place.
Believe it or not, I usually hold my tongue too. Mostly because if someone tries to fuck with me I leave them looking like an ass in front of their friends and that could lead to my first paragraph. I did make a guy cry a few years ago. Felt like a douche.