Join the Cardboard Tube Fighting League

Need to vent some aggression? Do you have an overwhelming urge to smash someone with a cardboard tube? If you answered yes, the Cardboard Tube Fighting League is for you. "The CTFL was created out of a desperate need to better train and arm citizens with cardboard tubes," says the official website. While Fight Club has 8 rules, the CTFL needs 9, presumably because of the added danger a cardboard tube brings to the table. Unfortunately for east coasters, the only officially sponsored events take place in San Francisco.