Lucy Meets Orson Welles - S6-E3
Continuity mistake: When Ricky comes home and and Lucy tells him she meet Orson Welles, Ricky shuts the door. Later on in the scene the door is suddenly open.
Lucy Meets Orson Welles - S6-E3
Continuity mistake: When Ricky says "From the look in your eyes back to Cuba" Ricky's briefcase suddenly appears on the piano.
Answer: According to Snopes.com, there is no definitive answer, but the mid-1960s is the most verifiable date with "The Munsters" being cited as the first, although others claim "The Brady Bunch" showed the first couple seen in a double bed. An early TV show from the late 1940s titled, "Mary Kay and Johnny" is also thought to have shown the married couple's bedroom as having a double bed, although probably not with them in it. However, this was when TV was aired live, and there are no surviving episodes, only anecdotal accounts.
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Something that is funny is that in the movie "A Christmas Story," they show the parents having two twin beds in their bedroom. In a real situation, they should have shown them having a double bed. Lucy and Ricky had twin beds pushed together in an early episode, which would have been pushing television boundaries in that time.