Zombie Bums from Uranus

Fiction for young readers and the sequel to 'The Day My Bum Went Psycho'. Zach and his bum are fighting to protect the Earth against an invasion of the smelliest and most dangerous bums to pollute the universe - zombie bums from Uranus. Can they prevent total bummification of the world? Includes glossary. By the author of the Just series and the forthcoming 'Bumageddon: The Final Pongflict'.