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The Day My Bum Went Psycho
The Day My Bum Went Psycho.jpg
AuthorAndy Griffiths
IllustratorTerry Denton
SeriesBum trilogy
GenreChildren's novel
PublisherPan Books
Publication date
Media typeHardback book
Followed byZombie Bums from Uranus 

The Day My Bum Went Psycho is a novel for children by Australian author Andy Griffiths. "Bum" is a slang word used in many English-speaking countries for the buttocks; in North America the term "butt" is used instead, and the book is published there under the title The Day My Butt Went Psycho.

It is illustrated by Terry Denton, who also illustrated some of Andy Griffiths' other books, including the Just! series.

The Day My Butt Went Psycho! is a Canadian-Australian animated television series loosely based on the novel, and its sequels, first shown on Australian channel Nine Network in September 2013 and on Canadian channels Teletoon and Télétoon in June 2014 which is criticized for its bad animation, puns and butt jokes.

Plot summary

Zack Freeman's bum is constantly detaching itself from his body and running off. One night, when he follows his bum, he learns that there is a plot by bums to take over the world. Specifically, the bums plan to create a huge, worldwide fart by building up a massive quantity of methane gas in the "Bumcano". When the Bumcano blows, all humans will be rendered unconscious. While they are unconscious, the bums will seize their chance and switch places with their heads.

Fortunately, Zack meets the "Bum-hunter" Silas Sterne and his daughter, Eleanor, and is introduced to the realities of life in a world where bums are constantly a threat. To prevent the Bumcano eruption, the friends enlist the help of the Kisser, the Kicker, the Smacker and Ned Smelly. The characters encounter a variety of bum-related places and things, including the "Great Windy Desert", "flying bum squadrons", Stenchgantor The Great Unwiped Bum and the Great White Bum.

Naturally, every possible opportunity for toilet humour is milked in this book for children, which won a number of Children's Choice awards in Australia.[1][2]

It is followed by Zombie Bums from Uranus (2003) and Bumageddon: The Final Pongflict (2005).


Television series

Main article: The Day My Butt Went Psycho!

A television series based on the books started airing on the Australian channel Nine Network and on the Canadian channels Teletoon and Télétoon on June 12, 2014.[3]

Live adaption

On January 19, 2019, an adaptation written by author Dave Lowe premiered at Brisbane Arts Theatre. This two-act play features young performers in the roles. [4]


  1. ^ "Archived copy". Archived from the original on 2006-09-01. Retrieved 2006-10-22.((cite web)): CS1 maint: archived copy as title (link) YARA Older Readers' Award 2001
  2. ^ "Archived copy". Archived from the original on 2006-10-16. Retrieved 2006-10-22.((cite web)): CS1 maint: archived copy as title (link) YABBA Older Readers' Award 2002
  3. ^ "Mark This Outrageous Day on Your Calendars: June 12 The Day My Butt Went Psycho". Chorus Entertainment. 22 May 2014. Retrieved 30 June 2014.
  4. ^ "Brisbane Arts Theatre || The Day My Bum Went Psycho". Retrieved 2019-01-30.