UFC fighter jail , Nick Diaz caused quite a stir during the UFC 158 post-fight press conference following his unanimous decision loss to welterweight champion Georges St-Pierre in Montreal, revealing that he's never paid taxes in his life. “I just have to invest a little more money (in training),” Diaz said when asked what he would do if he does stay in the UFC instead of retiring as he hinted at. “Now that I have a little bit more money. I've never paid taxes in my life and I'll probably go to jail. Readmore @ UFC fighter jail