Pop Goes the Weasel is a traditional English nursery rhyme that became widely known in the mid-1800s and has stayed in popular culture ever since. Its catchy tune was long associated with jack-in-the-box toys, music boxes, and children's sing-alongs, which helped generations of listeners recognise it instantly. Over time, the melody moved into cartoons, comedy sketches, and online videos, where its familiar rise and sudden pop became shorthand for a surprise. That instant recognition is why creators still reach for it when they want a quick, lighthearted joke.