- Actor Allusion: Willard asks the duck how he became a duck, to which it replies: "Well, I was a turtle for a while, but that wasn't going anywhere. Then my mother gave me the chance to be a duck, and I sort of flowed from there." Kaylan and Volman were members of The Turtles and later became members of Frank Zappa's Mothers of Invention. During the scene, Zappa's head rises in the horizon like the sun.
- Descended Creator: Along with serving as the film's co-writers and co-composers, Howard Kaylan and Mark Volman also provided the voices of the main characters.
- Co-producer Jerry D. Good is credited in the movie as the voice of the "Transvestite Fag" character.
- Executive Meddling: As noted below, Roger Corman forced the film's name to be changed from "Cheap!", because he didn't find the idea of calling the movie "Roger Corman's Cheap!" to be all that funny.
- No Budget: The film was produced for $110,000 with much of the animation being done by director and co-writer Charles Swenson.
- Keep Circulating the Tapes: It was released on DVD in 2001 and has since gone out of print.
- Orphaned Reference: The film has several instances of what were supposed to be Title Drops of the original title "Cheap!"
- Name's the Same: Widely known as Dirty Duck, even though it's not the actual title of the movie (the print bears the title Down and Dirty Duck). Thus it is confused with Bobby London's underground comic Dirty Duck, even though this movie is not at all based on that comic. London says that this was intentional.
- Unintentional Period Piece: The film heavily signifies the drug, exploitation, rock and underground comicbook movements of The '70s, to the point of exaggeration. The amount of shout outs to the specific decade is remarkable.
- What Could Have Been: The film was originally going to be called Cheap!, and would have been advertised as Roger Corman's Cheap! in theatrical syndication. Corman, who was uncredited as a producer for the film, objected to the title, feeling that it was a harsh Take That! towards his filmmaking techniques, and the film was promptly retitled. References to the original title are scattered throughout the film, to the point that the references could become jarring for anyone unfamiliar with the original title.
Trivia / Down and Dirty Duck