The phrase translates from Portuguese as a cuckold has been detected, with corno being common Brazilian slang for someone who has been cheated on. The clip spread as a shareable meme audio in Brazilian group chats, short videos and soundboards, where the mock-official announcement format makes it easy to reuse in many situations. It remains popular because the joke needs no context beyond the line itself, and the deadpan delivery works as a reaction to stories, photos or entrances that suggest betrayal or embarrassment.