Charlie Callas' cameo in this movie resulted from he and Jerry Lewis appearing as guests on Merv Griffin. Jerry was so impressed with Charlie that he promised him an appearance in his next project.
Features a cameo from Harland "Colonel" Sanders.
The dialogue Studs says while speaking backwards is "You called me from the telephone booth. Every time I would see him in the hotel, I got scared. I called you immediately from the phone booth, because he was there. Rex, I called you, and I called you, Thor. Everybody was.. Everybody was in the hotel at the same time. I got scared."