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The Huxtables brace themselves for Cliff's traditional junk-food binge when Clair (Phylicia Rashad) goes out of town for the weekend. Cliff (Bill Cosby), however, insists that he has turned over a new leaf, and serves up a healthy, well-balanced dinner to prove that he's reformed--and he almost gets away with his subterfuge! Elsewhere, Pam (Erika Alexander) and Charmaine (Karen Malina White) volunteer to keep close watch on Rudy (Keshia Knight Pulliam) and her friends, who are determined to prove how "cool" and grown-up they are by taking the subway to a school dance. This episode was originally produced for The Cosby Show's seventh season.