Before introducing the world to butts gone bad, Griffiths unleashed the internationally bestselling Just books starring a boy named Andy, who's back in this new title. Readers can join Andy in his quest to shock and annoy everyone around him. Illustrations.

ANDY GRIFFITHS is a best-selling kids author from Australia. "The Day My Butt Went Psycho!," his first title published in the United States, was an overnight success, appearing on the New York Times bestsellers list within a week of its release. He has garnered rave reviews from kids ad adults alike, and is the winner of several Australian children's book awards. He lives with his wife and two daughters in Melbourne, Australia.