Mjau Käften is a short Swedish-language clip that has circulated mainly as a small soundboard sound rather than as a widely documented meme, so its original recording and creator are not clearly established. Its appeal comes from the language mix itself: 'mjau' is the Swedish spelling of a cat's meow, while 'käften' is a blunt slang way of telling someone to be quiet. Online, that combination makes it useful as a compact, humorous comeback, and it continues to appear in reaction edits, chat jokes and short videos where a quick, playful shutdown works better than a longer argument.