Visible crew/equipment: In the episode "A Camping We Will Go", when Lana and Mr. Furley show up to the Cabin unexpectedly, watch closely when Lana tries to sit next to Jack on the couch.if you look through the window by the flag hanging on the wall you'll see Larry's girl, Laura, waiting outside by the front door (in her bright pink outfit) waiting to make her entrance.
Revealing mistake: Studio lighting on Janet and Chrissy's tent at night, in the middle of the woods. (00:21:12)
Answer: Mr. Roper was basically comparing Mrs. Roper to a cow, which is a sacred and highly revered animal among Hindus; Mrs. Roper's retort meant that she wasn't happy with her marriage or current station in life, so she'd be happier as a cow in India.
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