Who Would Have Thought?

I went to an eleventh birthday party today and the birthday girl got stacking cups as a gift. My old fogey self wondered, "How much fun can that be?" Turns out it can be lots of fun, hours and hours of healthy fun. The goal is to take 14 cups, stack 12 of them into a pyramid, and get them back into a stack as fast as you can. After carefully observing for an hour, I tried it myself. How well did I do? 13.54 seconds, thank you very much! The trick is to use both hands and hold the cups in place with your pinky finger as you stack the pyramid.