Mental Floss

WORDS

Princeton University's ivy-covered Nassau Hall, which dates back to 1756.

Here’s the story of how the Ivy League got its name—and a list of all the schools that belong to it (including the informal “Ivy Plus” schools).

Ellen Gutoskey






We can thank Shakespeare for popularizing it, sort of.

Contrary to popular belief, Shakespeare wasn’t the one who invented this common idiom. But trying to unravel its origins will land you in a bit of a tricky situation.

Mike Rampton


















The close quarters of those serving together in war is a perfect Petri dish for slang. From ‘FUBAR’ to ‘fobbit,’ here are some military slang terms you should know (plus, why the military uses so many acronyms, anyway).

Mark Peters
The origins of these animals’ names may surprise you.

‘Hippopotamus’ is Latin for “river-horse,” which makes sense for these semiaquatic mammals. The origins of some other animal names aren’t quite as literal.

Paul Anthony Jones
Where did this weird word come from?

It’s hardly the most complimentary turn of phrase, but rug rat has been a slang term for children for more than half a century.

Paul Anthony Jones