The kicks you can get out of stacking cups ∞

I've seen these around on YouTube for ages - It's such a stupid sport, yet it's so interesting. It's stupid in the sense that it's just a useless skill in stacking cups (unless you're some dishwasher person; which even if you are so, is still a stupid skill), and also stupid because of the over-exaggerated reaction of the surrounding people. Apparently, in the 8th grade, some schools teach this to kids.

Check out the mum's attire -- Very hip.