Watermelon Man is a 1970 American satirical comedy film directed by Melvin Van Peebles and starring Godfrey Cambridge, Estelle Parsons, Howard Caine, D'Urville Martin, Kay Kimberley, Mantan Moreland, and Erin Moran. Written by Herman Raucher, it tells the story of an extremely bigoted white insurance salesman named Jeff Gerber, who wakes up one morning to find that he has become black. The premise for the film was inspired by Franz Kafka's Metamorphosis and by John Howard Griffin's autobiographical Black Like Me.