You've probably used everyday idioms like "break the ice," or "hit the nail on the head" without giving them a second thought — most of us do. But behind these quirky expressions lie fascinating facts, bizarre backstories, and cultural twists that make the English language endlessly entertaining.

In Why Do We Say That? — The Complete 4-in-1 Idiom Collection, you'll explore a treasure trove of 404 popular idioms, sayings, proverbs, and expressions — all packed with fun trivia, origin stories, and strange-but-true histories. This value-packed bundle combines four best-selling books into one essential volume for curious readers, language lovers, and anyone learning English who wants to speak more naturally and confidently.

Each entry explains where the phrase came from, how it evolved over time, and what it really means today — making this the perfect companion for word nerds, trivia buffs, ESL learners, homeschoolers, and lifelong learners alike.

Inside you'll discover:

✔️ Why "kick the bucket" has nothing to do with actual buckets — and everything to do with death

✔️ How "pulling someone's leg" evolved from a sinister trick to a harmless joke

✔️ What "buttering someone up" has to do with ancient rituals (and actual butter)

✔️ Why we "burn the midnight oil" to work late — and where that expression really comes from