I thought that this book was quite funny, it's about and a boy in a wheelchair called Ned and his sister Jemima and Slime. It's the day before neds birthday and he's going to have a bath but the night before his birthday eve he goes into his sisters room and discovers that she is going to ply a prank on him with all the disgustang things she has in her room in lots of jars. Then, Ned gets the prank ready by pouring all the yucky stuff in the bath but then he accidentally creates Slime and Slime is really nice then they go on a peculiar day........... I personally don't really think that this book is David Walliam's best book but it is still good.