There’s nothing funny about bums. Nothing funny at all! They come in all shapes and sizes, the big, the wobbly the small… ... insists a teacher, reading from a book called The Book of Things That Are Definitely Not Funny . In this hilarious picture book, join a class of children as they attempt to keep a straight face while learning about bottoms . But after the teacher has described ants in pants , ninja farts, and torpedoes in the bath everyone is rolling around laughing . What will the headteacher say?! A fabulously silly story with hilarious illustrations—children and their grown-ups will love reading and giggling along.