Eating Raoul is a 1982 black comedy directed by and starring and co-written by Paul Barte
Set in a squalid, pre-HIV Los Angeles, Paul and Mary Bland (Paul Bartel, Mary Woronov) are a married couple who want only to leave the city and open a country restaurant, so they can get away from the swingers that have taken over their apartment building, driving the rent up. When one of the swingers gets into their apartment by accident and attempts to rape Mary, Paul kills him with a cast iron frying pan. This gives them an idea: place sex worker ads in newspapers, lure swingers (Mary: “Horrible sex crazed maniacs that no one in the world would miss.”) to their apartment, kill them and rob them.