This is a generic stock-style pain reaction rather than a line from a known film, show or character, which is why it circulates widely on user-made soundboards. Its appeal comes from its anonymity: because no recognisable actor or scene is attached to it, creators can reuse it for any minor injury gag without distracting viewers. The clip stays popular in short-form editing because a brief, exaggerated yelp is instantly understood across languages and needs no setup.