Mental Floss

ALL STORIES

Blue postal mailbox standing beside road and green grass

U.S. mailboxes have been many different colors, but blue was adopted surprisingly recently. Here's the story behind the shade.

Jane Alexander
Frida Kahlo in Self-Portrait With Braid

Frida Kahlo has become heavily mythologized, but some misconceptions—including her birth year and the idea that she was unknown during her life—are especially persistent.

Eden Gordon












The phrase "put a sock in it" has been telling people to quiet down for more than a century. Here's the most likely story behind the expression.

Chris Wheatley






Fireworks for the feast of Rome's Patron Saints Peter and Paul

Accidents, the search for immortality, and war may have all played roles in the development of these aerial attractions. Here's how the word "fireworks" came to be.

Eden Gordon