It was unusual to show children speaking relatively freely about sexuality, and because of the necessity of educating girls about menstruation, more addressed girls than boys. Most of these films concentrated on the physiology of sex and reproduction and were replete with animated 'plumbing' diagrams. Prior to the period of frankness that began in the mid-1960s, relatively few sex education films were actually produced in the United States. The coach is the authority figure and teacher. Deals with sexual organs, masturbation, wet dreams, and other male issues. Sex education film geared for teenage boys. Sex education film aimed at teenage boys, with the coach as authority figure and teacher.