In reading the Flavorpill update today, I came across something under the heading: Spectacle - The Cardboard Tube Fighting League Tournament at Justin Herman Plaza on Sunday.
I imagine it is probably a variation on those people who fight with foam swords and aspire to work at Medieval Times restaurant, but it looks like they're having fun in the photos! And it's probably a great stress reliever!
Start wrapping those Christmas gifts early this year to get down to the tube!