Teenage Hustler (1976)

A female narrator tells the story of a perverted English boy named Billy Boynton. He spies on girls from his bedroom window and talks with a Limey accent. To pay his rent, he poses with women in nude photos for men’s magazines. He tells the photographer Rufus that they should blackmail prostitutes he knows by secretly taking incriminating photos of them. The plan goes well until one of the prostitutes sees Rufus and beats him up.