Watch Mangue-Bangue for Free: How to Stream the Movie Online at 123Movies. . The quasi-fictional story of transgender sex workers living in Rio de Janeiro's swampy red light district, who are joined by a group of hippies and a runaway stockbroker, "Mangue-Bangue" is the paradigmatic expression of the post-1968 spirit of desbunde, the Brazilian slang catchword for "sex, drugs, and rock 'n' roll".