The clip is shared online under its Korean title, which translates as Rulru laughter, and it circulates as a short reaction sound rather than as a scene from a known show or film. Like many laugh clips on soundboards, it gained traction because it is easy to recognise, easy to drop into a joke and easy to reuse across short videos and memes. Its appeal is practical as much as emotional: a human laugh instantly signals that a moment is meant to be funny, even without subtitles or context, so creators keep returning to it for light, shareable edits.