He had a motorcycle accident and had his foot amputated. Then requested it back. Had photos and everything.
I guess it was just some sort of weird fascination and his friends agreed to try it with him. Dude's a legend in my book... but maybe I have a dark sense of humor.
He's the patron saint of bullies. Doesn't matter what he does as long as he's sticking it to the people they don't like. The kind of people who tell their kids, "I brought you into this world, I can take you out of it!"