title: Bum trilogy
text: # Bum trilogy
  
  The Bum Trilogy consists of three books by Australian author Andy Griffiths. They are aimed at children aged around ten and contain much toilet humor.
  
  ## Name change
  
  In the United States, the word "bum" has another meaning (i.e. homeless vagrant), so it is changed to "butt" in the versions sold there. The third book is further renamed to Butt Wars: The Final Conflict.
  
  Griffiths' reference guide to "prehistoric bumosaurs", What Bumosaur Is That?, was published in May 2007. It is not a part of the trilogy, although the book was mentioned in the trilogy.
  
  ## Books
  
  * The Day My Bum Went Psycho
  * Zombie Bums from Uranus
  * Bumageddon: The Final Pongflict (also known as Butt Wars! The Final Conflict)
  