The stank face comes from SpongeBob SquarePants, the long-running Nickelodeon cartoon where exaggerated facial expressions often carry the joke on their own. Clipped from a reaction moment, the noise became a shorthand for disgust on TikTok, where creators pair it with bad food, bad smells, awkward outfits, and cringe-worthy behaviour. Its appeal is visual as much as audible, since the face is recognisable even on mute, but the short grunt gives editors a clean, instantly timed punchline. That combination keeps it in regular rotation for reaction videos and short-form edits.