This chant is tied to Brazilian electoral politics and references Lula and the PT, the Workers' Party, whose ballot number is 13. Variations of the slogan have been heard in campaign events, supporter recordings and online political edits for years. The short audio spread widely because it is easy to recognize, easy to loop and instantly communicates a partisan message. It remains common in memes, WhatsApp forwards and social clips whenever Brazil's elections, party identity or Lula-related news return to the spotlight.