The phrase comes from everyday Brazilian Portuguese slang, where 'tá de brinks' is short for 'tá de brincadeira', meaning 'are you joking'. It spread as a short reaction audio in Brazilian meme culture, especially in WhatsApp voice messages and short-form videos where a quick spoken reaction works better than text. Because the expression is informal, playful and widely understood in Brazil, creators keep reusing it to flag something absurd, exaggerated or hard to believe, and its three-second length makes it easy to drop into edits.