Opposite Day

Name: Opposite Day
Genre: Comedy, Animation, Action & Adventure, Fantasy
Released: August 24, 2001
Cast: Jennifer Hale, Grey DeLisle, Richard Horvitz, Vanessa Marshall, Greg Eagles

The Grim Adventures of Billy and Mandy: Season 1: Episode 21

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Episode Details & Credits

Cartoon Network | Air Date: August 24, 2001

Starring: Jennifer Hale, Grey DeLisle, Richard Horvitz, Vanessa Marshall, Greg Eagles

Summary: Grim's impatience and sanity are put to the test as he is forced to deal with an unconventional holiday where everything means the reverse of what it normally does.

Creator: Maxwell Atoms

Genre(s): Comedy, Animation, Action & Adventure, Fantasy

Season 1 Episodes

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S1:E132. Dream a Little Dream
Air Date: October 12, 2001
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S1:E131. Little Rock of Horrors
Air Date: October 12, 2001
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S1:E122. Tickle Me Mandy
Air Date: September 28, 2001

See all Seasons and Episodes

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Seasons & Episodes

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Series Overview
Season 8

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- Season 8 Overview
  Air Date: July 19, 2002
Season 7

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- Season 7 Overview
  Air Date: October 6, 2006
Season 6

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- Season 6 Overview
  Air Date: January 4, 2018
Season 5

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- Season 5 Overview
  Air Date: January 6, 2006
Season 4

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- Season 4 Overview
  Air Date: April 27, 2019
Season 3

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- Season 3 Overview
  Air Date: August 9, 2019
Season 2

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- Season 2 Overview
  Air Date: June 11, 2004
Season 1

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- Season 1 Overview
  Air Date: June 13, 2003
- tbd
  S1:E132. Dream a Little Dream
  Air Date: October 12, 2001
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  S1:E131. Little Rock of Horrors
  Air Date: October 12, 2001
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  S1:E122. Tickle Me Mandy
  Air Date: September 28, 2001
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  S1:E121. Big Trouble in Billy's Basement
  Air Date: October 5, 2001
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  S1:E112. Billy and the Bully
  Air Date: October 5, 2001
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  S1:E111. Billy's Growth Spurt
  Air Date: September 28, 2001
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  S1:E102. To Eris Human
  Air Date: October 5, 2001
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  S1:E101. Hoss Delgado: Spectral Exterminator
  Air Date: September 28, 2001
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  S1:E92. Beasts and Barbarians
  Air Date: September 21, 2001
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  S1:E91. A Grim Surprise
  Air Date: September 21, 2001
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  S1:E82. Something Stupid This Way Comes
  Air Date: September 21, 2001
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  S1:E81. Grim or Gregory?
  Air Date: September 14, 2001
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  S1:E72. Tastes Like Chicken
  Air Date: September 14, 2001
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  S1:E71. Grim Vs. Mom
  Air Date: September 14, 2001
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  S1:E42. Five O'Clock Shadows
  Air Date: October 22, 2004
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  S1:E41. Terror of the Black Night
  Air Date: November 30, -0001
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  S1:E40. Billy and Mandy's Jacked Up Halloween
  Air Date: October 1, 2003
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  S1:E39. Halls of Time
  Air Date: August 1, 2003
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  S1:E38. Sister Grim
  Air Date: July 25, 2003
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  S1:E37. Grim for a Day
  Air Date: August 15, 2003
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  S1:E36. Go Kart 3000!
  Air Date: November 30, -0001
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  S1:E35. Chickenball Z
  Air Date: November 30, -0001
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  S1:E34. Tween Wolf
  Air Date: July 4, 2003
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  S1:E33. The Grim Show
  Air Date: July 18, 2003
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  S1:E32. Get Out of My Head!
  Air Date: August 31, 2001
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  S1:E31. Mortal Dilemma
  Air Date: August 31, 2001
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  S1:E30. Crushed
  Air Date: July 11, 2003
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  S1:E29. Grim in Love
  Air Date: July 11, 2003
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  S1:E28. Son of Nergal
  Air Date: July 25, 2003
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  S1:E27. Who Killed Who?
  Air Date: November 30, -0001
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  S1:E26. The Really Odd Couple
  Air Date: June 27, 2003
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  S1:E25. Creating Chaos
  Air Date: November 30, -0001
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  S1:E24. Mandy the Merciless
  Air Date: November 30, -0001
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  S1:E23. Brown Evil
  Air Date: June 20, 2003
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  S1:E22. Night of the Living Grim
  Air Date: November 30, -0001
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  S1:E21. Opposite Day
  Air Date: August 24, 2001
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  S1:E20. Educating Grim
  Air Date: November 30, -0001
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  S1:E19. Toadblatt's School of Sorcery
  Air Date: November 30, -0001
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  S1:E18. Grim or Gregory?; Grim vs. Mom; Tastes Like Chicken
  Air Date: November 15, 2003
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  S1:E18. Battle of the Bands
  Air Date: August 1, 2003
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  S1:E17. Fiend Is Like Friend Without the 'R'; Recipe for Disaster...
  Air Date: November 8, 2003
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  S1:E17. Dream a Little Dream
  Air Date: October 18, 2002
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  S1:E16. Little Rock of Horrors
  Air Date: October 18, 2002
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  S1:E15. Tickle Me Mandy
  Air Date: October 11, 2002
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  S1:E14. Get Out of My Head; Look Alive; Mortal Dilemma
  Air Date: September 13, 2003
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  S1:E14. Big Trouble in Billy's Basement
  Air Date: October 4, 2002
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  S1:E13. Little Rock of Horror / Dream a Little Dream
  Air Date: October 18, 2002
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  S1:E12. Big Trouble in Billy's Basement / Tickle Me Mandy
  Air Date: October 11, 2002
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  S1:E12. Skeletons in the Water Closet
  Air Date: August 24, 2001
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  S1:E11. Billy's Growth Spurt / Billy and the Bully
  Air Date: October 4, 2002
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  S1:E11. Meet the Reaper
  Air Date: August 24, 2001
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  S1:E11. Billy & the Bully/To Eris Human/Big Trouble in Billy's Ba...
  Air Date: August 29, 2003
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  S1:E10. Hoss Delgado: Spectral Exterminator / To Eris Human
  Air Date: August 9, 2002
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  S1:E10. Billy's Growth Spurt/Hoss Delgado:Spectral
  Air Date: August 23, 2003
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  S1:E9. A Grim Surprise / Beast and Barbarians
  Air Date: August 2, 2002
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  S1:E9. Grim For A Day/Chickenball Z/Max Courage
  Air Date: August 15, 2003
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  S1:E8. Grim or Gregory / Something Stupid This Way Comes
  Air Date: July 26, 2002
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  S1:E7. Grim vs. Mom / Tastes Like Chicken
  Air Date: July 19, 2002
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  S1:E6. A Dumb Wish
  Air Date: October 19, 2001
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  S1:E5. Recipe for Disaster
  Air Date: October 12, 2001
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  S1:E4. Fiend is Like Friend Without the "R"
  Air Date: October 5, 2001
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  S1:E3. Mortal Dilemma / Get Out of My Head
  Air Date: September 7, 2001
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  S1:E2. Opposite Day / Look Alive!
  Air Date: August 31, 2001
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  S1:E1. Meet the Reaper / Skeletons in the Water Closet
  Air Date: August 24, 2001