The voice belongs to Captain Nascimento, the BOPE commander played by Wagner Moura in the 2007 Brazilian film Tropa de Elite, known internationally as Elite Squad. The film follows Rio de Janeiro's special police operations battalion and turned Nascimento into one of Brazil's most quoted film characters. Short lines from the movie circulated widely as ringtones, WhatsApp audios and meme clips, and this polite phrase stuck because it contrasts his usual intensity. It remains popular in Brazilian internet culture as a recognisable reaction to help, effort or an awkward favour.