The phrase desenha no quadro né is everyday Brazilian Portuguese for draw on the board, right, and this short recording circulates online mainly as a standalone voice clip rather than a known scene from a film or show. Its exact source is not documented, so its popularity comes from how users reuse it on soundboards and in short edits. The familiar classroom wording and the tag né make it instantly understandable to Portuguese speakers, which helps it work as a quick joke in chats, streams and school themed videos.