Sport Stacking

Alison and I had dinner at our favorite local Indian restaurant tonight. I notice a couple seated at a neighboring table, each member wearing a T-shirt printed, in part, with "Maryland Sport Stacking Championships." I wanted to ask them what it was, but Alison persuaded me to ask the internet, instead. It turns out that sport stacking is an activity in which individuals or teams stack plastic cups as quickly as possible. Hunh. I don't think I'll replace CrossFit, cycling, inline speed skating, hiking, or any of my other exercise activities with this "sport."