Starring: Lucille Ball, Desi Arnaz, Vivian Vance, William Frawley
Other mistake: When Lucy responds to the money matter about her hair care, she states, "I can be a thin redhead or a fat brunette," when her real-life natural hair colour was blonde (later dyed to enhance her film career).
Suggested correction: Lucille Ball was naturally blonde. Lucy Ricardo was a brunette. This is, at best, trivia.
Revealing mistake: At the Brown Derby, when Lucy bumps into the waiter causing him to trip and spill the tray all over William Holden, we can see that the waiter's hand is taped to the bottom of the tray for the stunt to be done efficiently. (00:15:15)
Ricky Ricardo: What's the matter with you? Are you crazy or something?
Trivia: It was the first to tape before a live audience.
Question: Why would Ethel think Fred's enlisted? He wouldn't be allowed in due to his age right? I know the plot yet this thinking makes no sense.