Diagram Group

Want to be a real pest? Show people up with things they don't know, which you'll find in this collection of hundreds of little-known, fascinating facts. Example: When a family member is brushing their teeth, tell him or her this one: The first toothpaste, a thousand years ago, was a mix of honey, salt, and ground glass. When you find two lovebirds making out, inform them that in ancient Rome kissing lips was considered ordinary, but that kissing people's...