Willard Isenbaum, a lonely insurance man with wild sexual fantasies, decides to ask out the new secretary, Susie, whom he has only known for a day and to whom he has never spoken.

His female boss sends him to investigate a claim filed by Painless Martha, an aging tattoo artist, who works in the city.

After several encounters with an old prospector dying of thirst, a racist police officer, a lesbian couple, and a short Mexican "bandito", they are finally picked up by a trucker.

Fritz, a film based on a character created by artist and illustrator Robert Crumb, was the first animated movie to receive an X rating in the United States.

[2][3] Charles Swenson developed Down and Dirty Duck as a project for former Turtles and Mothers of Invention band members Kaylan and Volman under the title Cheap!

[2][3] Producer Jerry D. Good pitched the film to Howard Kaylan and Mark Volman while the production company, Murakami-Wolf, prepared the animated sequence for Frank Zappa's 200 Motels.

[2] Kaylan and Volman recorded the music at Cherokee Studios with The Robbs serving as their backing band,[5] credited as Flo & Eddie.

[2] The New York Times called it a "zany, lively, uninhibited, sexual odyssey that manages to mix a bit of Walter Mitty and a touch of Woody Allen with some of the innocence of Walt Disney [and the] urban smarts of Ralph Bakshi".

[2] Charles Solomon of the Los Angeles Times gave the film an extremely negative review, calling "a sprawling undisciplined piece of sniggering vulgarity that resembles nothing so much as animated bathroom graffiti.