In this episode of 21 Minutes to Go, Goldstein and Cundy explore the origins of common idioms like "hair of the dog," "show some spunk," and "balls of steel." They share humorous, often dubious anecdotes about Victorian pubs, rhyming slang, and the construction of the Titanic to explain these phrases. The segment concludes with a listener question prompting Cundy to recount a gross experience with expired collagen, leading to a debate on the shelf life of tinned food.