new drinking game?

I saw several people at the Mapleleaf Parade that had empty beer cans taped together with duct tape.  I wondered what it was all about so I did some searching and found that it is a beer drinking game called Wisest Wizard.  When I asked a couple parade goers about the cans, they just said that they were full at one time but now they're empty.  They didn't really explain why they had all those cans taped together.  Maybe they didn't know it was an actual game.  Wisest Wizard