The exact source of this version is not clear from the available information, but "ぷんぷん" is a familiar Japanese onomatopoeic expression for being angry or pouty. Online, clips with this label circulate in meme compilations, short edits, and reaction posts, especially where creators want a softer, more comedic form of annoyance than a full scream or a harsh buzzer. It stays useful because viewers instantly read the mood: cute frustration, mock offense, or dramatic sulking in a very short burst.