The phrase is everyday Brazilian Portuguese for addressing a group in the afternoon, and as a clip it circulates as a short greeting sound rather than as a line tied to a documented film, show or song. Its appeal is practical: Portuguese-speaking creators can use two seconds of audio to signal the time of day, set a friendly tone and connect with an audience that instantly recognises the greeting. Because it is brief, clear and easy to drop into edits, it keeps appearing in vlogs, streams and short-form videos whenever a creator wants a warm, informal opening instead.