Meek for a Week

"Meek for a Week" is the first half of the seventeenth episode of season 1 of the animated children's series Arthur. It originally aired on January 13th, 1997.

Plot
Muffy bets Francine she can't be nice to everyone for a whole week and she can't tell anyone about why she's being nice. Arthur and his friends are worried when Francine starts acting nice for no apparent reason and are worried she may "pop" if she continues bottling up her anger. They try fruitlessly to diffuse her.