Rabbit Test is a 1978 American comedy film about the world's first pregnant man, directed and co-written by Joan Rivers and starring Billy Crystal in his film debut. This was the only directing effort by Joan Rivers, who also plays a nurse in a brief scene, while her daughter Melissa Rivers also has a bit part. Rivers' husband, Edgar Rosenberg, was producer. It was the only theatrical feature to be scored by the team of Mike Post and Pete Carpenter. Michael Keaton made his feature film debut in a small non-speaking role. The title is a reference to the Friedman test, commonly known as the rabbit test, a medical procedure used for several decades in the 20th century to determine pregnancy. Plot Lionel Carpenter (Billy Crystal) is a night-school teacher who has bad luck with women. He remains a virgin until his brash cousin Danny (Alex Rocco) sets him up with a one-night stand. Soon after, Lionel starts feeling nauseated and vomits, eventually doing so onto Segoynia Savaka (Joan Prather), one of his immigrant students. This turns out to be a blessing in disguise, as it gives him an excuse to ask her out on a date, and a romance develops. When Lionel meets Segoynia's fortune-telling grandmother (played by Roddy McDowall in drag), she intuits that he is the world's first pregnant man. This results in a series of gags relating to his pregnancy and people's reactions to it. One side plot has Lionel being pursued by the Army because the President of the United States is afraid of what effect the widespread ability of men to conceive will have on population growth. In the ending sequence, which is patterned after the Nativity, Lionel finally goes into labor. The camera rises to Heaven, where God announces to the viewers the successful delivery: "Oh my god... It's a girl!" Cast The main cast includes the following: Production When all the major studios turned Rivers down for funding, she raised about half the film's $997,000 budget by remortgaging her home and convincing her father to do the same, and raised the other half with a series of investment deals. Rivers explained how she got so many cameos on a tiny budget: "We had no money to spare. I made up a letter: 'Dear so-and-so, we'd love to have you be in a part; there is no money, no point in arguing, etc.'"