The word ninny has been used in English for centuries as a gentle term for a fool, which helps explain why the clip keeps circulating as a reaction sound rather than a harsh insult. Online, creators reuse it in meme edits, gaming clips and short comedy videos where an old fashioned word feels funnier than modern swearing. Its appeal is its tone: it mocks a bad decision without sounding genuinely angry, so it fits family friendly edits and playful roasts that are shared in comments and group chats.