Little is known about the original source of the clip labelled km2, and the title itself appears to be a shortened soundboard label rather than a reference to a character or scene. It circulates in the way many short meme sounds do, through soundboard pages where users play it instantly, share it, or download it as an MP3 for edits. Its appeal is practical: a brief, context-free clip can be dropped into chats, streams and short videos without needing setup or explanation from the creator.