As a kid, I was an avid reader of MAD magazine, which had a regular feature called Al Jaffee's Snappy Answers to Stupid Questions. (You can still find used copies of the books of the same name.) The ...

Since you're reading this column, I think it's safe to assume that your brain still isn't quite full enough of useless knowledge. So here's some more. Mental Floss magazine has compiled what they call ...