The phrase comes from everyday Brazilian internet slang, where poxa softens a reaction and abbreviations such as vc and mt are common in chats and captions. Short voice clips like this one circulate as reaction audio because they carry a complete social moment in only a few seconds: surprise, teasing and familiarity all at once. Without a single clear original video attached to it in the available information, its spread has depended on reuse, with creators dropping it into edits, streams and group chats whenever an age gap becomes the joke.