What Really Happened at UFC 104

Close analysis of the fight between Marucio “Shogun” Rua and Lyoto “The Dragon” Machida will reveal two very important facts that call the official decision into question. First, midway through the fight fans began inexplicably booing for about ten seconds, despite relatively no change in the amount of action before and after. This suggests that something foul and unpleasant briefly afflicted the audience in the third round—evidence that the judges were suffering from one of the aforementioned symptoms, colloquially referred to as “shitting your pants.” The crowd was not booing the fighters, who were dutifully engaged in a light sparring session, but rather the stench wafting up from the officials.

http://www.fighting-mma.com/articles/2009/what-really-happened-at-ufc-104.php