You've heard of the term sore loser, right? Well, there's also a such thing as a sore winner. And this MMA fighter could be described as a sore winner because of how he refused to win a fight graciously.
During his debut MMA match in the UFC, Drew Chatman was taking on Irvin Ayala. During an exchange, Ayala managed to knock himself out when he smacked his head against Chatman's knee. The ref immediately noticed that Ayala was out and ended the match. Chatman then got up, jumped on Ayala's back as he lay unconscious and did a celebratory front flip. Yeah, he used an unconscious guy's back as a springboard for his celebration. Douche.
Chatman was disqualified for this stunt, meaning the win was given to Ayala, and we're just fine with that.