The Bad Book is a 2004 book by Andy Griffiths, who wrote the novel The Day My Bum Went Psycho, with Terry Denton, who also did the illustrations.

It is a compilation of stories, drawings, rhymes and poems about such quirky characters like 'Bad Baby', and 'Bad Daddy' doing such bad things like miss-throwing knives, and blowing up objects and people at Christmas.

It was followed by The Very Bad Book (2010) and The Super Bad Book (2011) The Bad Book contains forty-five stories overall.

In 2005 The Bad Book was awarded the BILBY Award for Younger Readers.

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