With no clear credited source in its title or tags, this clip circulates online purely for its chant and timing rather than a known character or scene. The do do da da phrasing is easy to recognise from the first second, so creators reuse it as a shorthand for silliness in short form edits. It fits the wider habit of dropping short vocal memes between cuts, where a familiar nonsense sound does the work of a punchline without needing any setup or explanation from the creator at all.