Trivia: The infamous closing scene in which Divine eats dog feces was completely real. The dog was fed steak before filming, and his owner wouldn't let it outside to "go" until they were ready to film. Divine later called a hospital to see if he could get sick from the stunt, pretending to be a concerned parent whose "retarded child ate dog poop" because he was too embarrassed to admit he did it.
Trivia: Mary Ure plays Katherine, the mother of Marguerite (Sondra Locke). In real life, Ure (born 1933) was only eleven years older than Locke (born 1944).
Trivia: When Jason dies at the end of the film, it is not Ray Milland you see but a double. This is due to the fact that Milland quit the film three days early due to his intense hatred of the production.