I saw him in boston about 10 years ago, he was much smaller in person than I had expected, but that seems to be the case with most famous people when you are used to just seeing them on screen. I still wouldn't want a piece of him though, the guy is an animal with a penchant for biting people. I remember reading about some motorcyclers that pissed him off some how and he was arrested for assaulting them, I remember one of them got a boot to the balls according to the article... so outside the ring I really don't think any sort of technique to try to maim you for life is out of the question, guy would probably skull fuck someone without a second thought.