Business Is Business (1971)

Dutch prostitutes Greta and Nel cruise the Amsterdam red light district, seeking clients to involve in their elaborately staged fetish fantasies, be it disciplinarian headmistresses, surgeons cutting open a willing patient, or even dressing up as chickens, the duo show their expertise in role-playing again and again and again. In reality, Nel is trapped in an abusive marriage and Greta is forever in the middle of their confrontations but her life takes a positive upturn when she becomes involved with a client.