There is no clear single source for this short clip, and it circulates online mainly as a generic slime sound rather than a line from a show or film. Soundboards and meme editors have kept it in use because a three-second wet squelch is easy to drop into almost any gross or messy moment without needing context. Its appeal is purely practical: the sound is instantly recognisable as slime, it reads as funny rather than realistic, and it works at low volume under jokes, reactions and transitions in short-form video.