Overview
Billy and Mandy tell Grim it is "Opposite Day" and that, when they say something, they really mean the opposite. Due to his difficulty understanding the concept of Opposite Day, Grim has to do Mandy's chores. Finally, Grim thinks he understands when Billy and Mandy say they "want" pie, meaning they "do not want" pie. However, Mandy then says that when she said it was Opposite Day, it really was not.
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1 - 1Meet the Reaper August 24, 2001
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1 - 2Skeletons in the Water Closet August 24, 2001
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1 - 3Opposite Day August 31, 2001
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1 - 4Look Alive! August 31, 2001
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1 - 5Mortal Dilemma September 07, 2001
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1 - 6Get Out of My Head! September 07, 2001
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1 - 7Fiend Is Like Friend Without the 'R' October 05, 2001
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1 - 8Recipe for Disaster October 12, 2001
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1 - 9A Dumb Wish October 19, 2001
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1 - 10Grim vs. Mom July 19, 2002
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1 - 11Tastes Like Chicken July 19, 2002
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1 - 12Grim or Gregory? July 26, 2002
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1 - 13Something Stupid This Way Comes July 26, 2002
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1 - 14A Grim Surprise August 02, 2002
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1 - 15Beasts and Barbarians August 02, 2002
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1 - 16Hoss Delgado: Spectral Exterminator August 09, 2002
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1 - 17To Eris Human August 09, 2002
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1 - 18Billy's Growth Spurt October 04, 2002
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1 - 19Billy & the Bully October 04, 2002
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1 - 20Big Trouble in Billy's Basement October 11, 2002
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1 - 21Tickle Me Mandy October 11, 2002
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1 - 22Little Rock of Horrors October 18, 2002
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1 - 23Dream a Little Dream October 18, 2002