The sound comes from the Pluto cartoon The Purloined Pup, released on 19 July 1946, and was later preserved in professional libraries by Hollywood Edge as part of a set of raspberry takes. That catalogue life kept the tiny razz in circulation long after the cartoon, with editors reusing it in television comedy, cartoons and online videos. Its high pitch and scratchy edge made it easy to spot in a mix, so it survived as a shorthand for teasing, disbelief and a quick, childish put down.