The phrase itself is Polish, and the clip circulates online as a short meme reaction sound rather than as a line tied to a widely documented film, show or viral video. That lack of a single famous source is part of its appeal on soundboards, where users search for a brief, recognisable exclamation they can drop into edits. Polish-speaking creators and viewers recognise the wording immediately, while other audiences use it for its sound and timing alone. It survives because the knee joke is universal, visual and easy to understand in a few seconds.