The Cosby Show: I Know That You Know

Episode 21 |  Season 3 1986 - 1987 |  First Aired: 3/19/1987
Synopsis:
Theo sends away for a practical joke set and plays pranks on everyone in the family except Cliff, who says he will never be tricked. While Cliff is at the hospital, Sondra and Elvin show up and announce that they are getting engaged. The family plays a prank on Cliff, with Clair pretending that she hates Elvin and will never allow him into the family. Cliff finds out and reverses the prank on everyone by throwing Elvin out of the house. After the pranks are revealed, everyone celebrates the engagement.
cast + crew
Director
Cliff Huxtable
Clair Huxtable
Denise Huxtable
Vanessa Huxtable
Theodore Huxtable
Rudy Huxtable
Elvin Tibideaux
Sondra Huxtable
Creator
Writer
Writer
Creator
Executive Story Editor
Executive Producer
Executive Producer
Co-Executive Producer
Supervising Producer
Producer
Producer
Associate Producer
Co-Producer
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