Continuity mistake: In the scene where Theo tries to prank Cliff, and Theo grabs the fake gum, he stuffs the "Bag 'o' Gags" under his shirt. You can see throughout the scene that Theo is holding up the bag with his hand. Later on in this scene, the bag drops. In the next shot, there is something green showing from underneath Theo's shirt (The Bag 'o' Gags). Then in the next shot it is hidden again, being held up by Theo's hand. (00:03:55 - 00:05:55)
The Cosby Show (1984)
1 continuity mistake in I Know That You Know - chronological order
Audio problem: When Cliff asks Rudy what's her boyfriend's name, you can hear a man off-camera saying "Bud" before Rudy answers.
Vanessa Huxtable: Rudy, what are you gonna do in life with a fourth grade education?
Rudy: Teach third grade .
Trivia: This is the first appearance of Sondra, the eldest of the five Huxtable children. Sabrina LeBeauf, who plays Sondra, beat out future pop star Whitney Houston for the role.
Autumn Gifts - S4-E7
Question: When Cliff is watching TV, the sound of voices singing "Open the door and let me in." come from the television. What song is this?
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Chosen answer: That is the song "Open the Door Richard."