The line comes from the Latin American Spanish dub of The Simpsons, a version famous across Spanish-speaking audiences for its jokes and voice performances. In online slang, niño rata later became a common insult for young, antisocial gamers, popularized through gaming videos and streams in the 2010s. Clips pairing the dubbed Simpsons delivery with that slang spread on soundboards and in WhatsApp chats and meme edits, where the short phrase works as an affectionate roast rather than a serious insult and remains instantly quotable.