As a kid, I couldn't hack at my friends with a real sword, so we used cardboard tubes to fence. Who knew that it was an actual sport? The Cardboard Tube Fighting League has competitions all over the world where people come together to play and show off their homemade cardboard armor.
Official Website of the San Francisco Branch
Link via The Presurfer
http://www.youtube.com/watch?v=sgVTB-kux_A
(NSFW audio)
http://www.funnyordie.com/videos/426608ab8c/bat-fight
Fight or be recycled!
a game of honor and diplomacy