The strange thing about superstitions is that people through the ages wondered about their origins. If they didn't know the story, they made one up …so actual origins are difficult to pinpoint. But you'll learn something about your favorite superstitions in this mental_floss video, and you'll probably learn about some new superstitions you've never heard of before. Just more ways to give yourself bad luck!
John Green is always entertaining, but his references to Rihanna and Lizzie McGuire pegs the intended audience as much younger than I hoped. Yes, throwing coins in a fountain predates the 21st century. -via mental_floss