The sound comes from Brazilian streamer Nako, who shouts the Portuguese phrase while reacting to something he finds unbelievable. The full sentence roughly means asking how such a thing can happen, which is why Portuguese-speaking creators use it as a quick, expressive reaction rather than a narration clip. Shared as a short soundboard audio, it fits the same shelf as a scream meme for moments of shock, frustration and comic disbelief, and it stays useful because the emotion is clear even without understanding every word.