The sound is linked to the Mickey Mouse cartoon A Gentleman's Gentleman, released on 28 March 1941, where a small hand rattle provided a quick, lighthearted cartoon accent. It was later catalogued in the Hollywood Edge library as a gourd rattle, a classification that helped editors reuse it long after its original cartoon appearance. Because the shake is instantly recognisable as a baby's toy, creators still drop it into family videos, animations and playful edits whenever they need a short, innocent sound without dialogue.