Let me back up a bit.
Yesterday I thought I'd treat my Starbuck's treating friend to a quintessential Canadian treat from a quintessential Canadian establishment, Tim Hortons and their Ice Cap. I went through the drive thru, placed my order and then moved forward to the pick up window. When I got there I was told that the car ahead had paid for my order. Really? It's happened to me? How fun and exciting! The pay it back that happens at Tim Horton's drive thru's all across Canada. So what else was there to do but pay for the person behind me who hopefully paid for the person behind them. So fun to have happen.
I believe it started in a very busy drive thru in Calgary a few years ago during the morning rush. The pay it back went for hours and made the news and has now become a Canadian thing to do. So if you're ever in Canada, and you find yourself in a Tim Horton's drive thru and you come to the window only to be told you're order has been paid for, go for the Canadian experience and pay it back!
Does this happen in the States, too?