From BuzzFeed
buzzfeed.com/daves4/can-you- … aving-your
I’d recommend starting with #15.
I was surprised by the one about chalk. I didn’t think chalk was so tightly organized at that level. The others…OK.
Some of those were really stupid but there were some interesting ones like atoms in a glass of water.
Well, I think we can all agree then: That settles it. 
#28 was interesting.