La Cucaracha is a traditional Mexican folk song that became widely known during the Mexican Revolution, when its catchy tune carried satirical verses sung by soldiers. The melody later became a staple novelty car horn, especially in Mexico and the United States, where drivers used musical horns to announce themselves with humour rather than a standard warning blast. On social media, the short horn version spread as a ready-made comedy sound, used in memes, pranks and short videos because almost everyone recognises the tune instantly.