Trivia: Look at the name of the technical adviser in the opening credits - it's "Sun Tan Lo Tion".
Trivia: In addition to Ryan O'Neal appearing in this film we also see his brother Kevin O'Neal (delivery boy), and his mother Patricia O'Neal (woman on plane).
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: The plot of the medical drama that Charles Hawtrey and Hattie Jacques settle down to watch is taken directly from the film "Green for Danger", which gave Jacques her first talking role.
Trivia: Doris Roberts plays Charles Grodin's mother in the film, even though in real life she's only five years older than him.
Trivia: This film marked the on-screen debut of Woodstock.