Most stag films revolved around five common plots, writes William Rotsler in his 1974 book Contemporary Erotic Cinema: Plot 1. Reading or handling some phallic-shaped object arouses a woman alone at home. Masturbation follows. A man arrives, is invited inside, sexual play begins; Plot 2. A farm girl gets excited watching animals copulate. She runs into a farmhand, or a traveling salesman, and sexual play begins; Plot 3. A doctor begins examining a woman and sexual play begins; Plot 4. A burglar finds a girl in bed or rapes her or vice versa; Plot 5. A sunbather or skinny dipper gets caught and seduced.