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The Cosby Show (1984)
Season 3 • Episode 21 • I Know That You Know
The Cosby Show Season 3, Episode 21: I Know That You Know
When Sondra and Elvin announce their engagement, Clair and the children use the news to play a practical joke on Cliff, who launches a counter-offensive of his own. Watch The Cosby Show Season 3, Episode 21 I Know That You Know in HD free online. Enjoy high-quality streaming of The Cosby Show Season 3, Episode 21 and share your thoughts in the comments below!
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Episodes
25 episodes
Bring 'em Back Alive
The Huxtable house is thrown into chaos after Rudy finds a snake in the basement.
22 min
Food for Thought
Clair challenges Cliff to not eat any salty food for the day. Denise leaves for her freshman year at Hillman College.
22 min
Golden Anniversary
Russell and Anna's 50th wedding anniversary. The family performs James Brown's "I Got the Feelin' " in this sequel to Season 2's "Happy Anniversary".
22 min
Man Talk
Although he has a steady girlfriend, Theo wants to start dating someone else.
22 min
Mother, May I?
After Clair specifically forbids her from wearing make-up, Vanessa, behind her mother’s back, does it anyways.
22 min
The March
Theo writes a report on the March on Washington. But gets a poor grade and is asked to redo his project. Much to his surprise, he learns more about the march from his family than he did from books. Meanwhile, Vanessa is worried about asking a boy to the turn-around dance.
22 min
Theo's Flight
Theo and Cockroach decide they want to learn to fly, but Cliff doesn't want to waste his money on another dream of his son's.
22 min
Vanessa's Rich
Friends call Vanessa a stuck-up, rich girl at school.
22 min
Denise Gets a D
Denise's college career starts with a D, but Denise is too scared to show her parents. Clair needs to rest in bed because of a pinched nerve.
22 min
A Girl and Her Dog
Rudy and Peter find a dog and attempt to take care of it without her parents knowing.
22 min
War Stories
Cliff and his father's friends play a challenging game of cards. Vanessa prepares to go to a skating party with a nervous date, Tyrone.
22 min
Cliff in Charge
Cliff is in charge when Clair leaves for 10 days.
22 min
Monster Man Huxtable
Although, Elvin and Sondra have made plans for the weekend, he helps Theo with some wrestling moves. He also reveals that he is thinking of asking Sondra to marry him.
22 min
Rudy Spends the Night
Cliff establishes the Huxtable Men's Club, when the women are away, to help Theo recover from his sadness over a lost date. Vanessa is very excited that big sister Denise is letting her go to the Village with Denise's college friends.
22 min
Say Hello to a Good Buy
Cliff buys a new car. Rudy cuts some animal pictures out of Cliff's expensive books for school. Watched by almost 65 million viewers when it originally aired, "Say Hello to a Good Buy" was the series' highest rated episode.
22 min
Denise Gets an Opinion
Denise has a blind date, but is really scared. So, she asks Theo to grade him for her.
22 min
Calling Doctor Huxtable
Cliff is called to the hospital for 3 deliveries.
22 min
You Only Hurt the One You Love
Rudy gets hurt from Theo's rough games. Also, Cliff learns that the woman who cleans up the Doctor's Lounge at the hospital (Rita Moreno) has been fired.
22 min
The Shower
Denise holds a bridal shower for her pregnant, bride-to-be friend, Veronica, but finds out some disturbing information.
22 min
Cliff's 50th Birthday
Cliff's 50th birthday has all kinds of surprises.
22 min
I Know That You Know
When Sondra and Elvin announce their engagement, Clair and the children use the news to play a practical joke on Cliff, who launches a counter-offensive of his own.
22 min
Andalusian Flu
While Cliff and Clair have the flu, Theo tries to keep the house going.
22 min
Bald and Beautiful
Cliff's Navy friend comes to visit. Cockroach shaves his head to be in a rock video.
22 min
Planning Parenthood
Clair's sister decides she wants to be a mother. Cliff takes Rudy and her friends out to eat at a fancy restaurant.
22 min
Hillman
The Huxtable family goes to Hillman College to attend a ceremony in honor of its president's retirement.
22 min