The phrase “mad as a hatter” grew from hat making, where mercury exposure harmed workers and was linked with strange behavior.

An oxymoron combines opposite ideas in one phrase, often to add contrast, humor, emphasis, or a more complex meaning.

An egoist focuses on self interest. An egotist is excessively self important and talks too much about themself.

“Smoke and mirrors” started in stage magic. Today it describes deception, distraction, or flashy presentation that hides the truth.

This familiar phrase means be careful and polite, but its true origin is uncertain. Several popular explanations help explain why.