The word "Flamengo" refers to one of Brazil's most popular and successful football clubs, based in Rio de Janeiro. It's a proper noun and a cultural icon in Brazil.
In Tim Maia's song, the repetition of "Flamengo" isn't just about the football club; it evokes a sense of passion, identity, and perhaps even a playful rivalry or devotion, which is deeply ingrained in Brazilian culture. It's an interesting choice because it's a proper noun that carries significant cultural weight beyond its literal meaning.