I need a new bum! Mine's got a crack.I can see in the mirror a crack at the back. What to do when you need a new bum? Should you get one that's blue or yellow spotted? A rocket bum that's all fire and thrust, or a robo-bum? The options are endless – but wait, Dad's bum crack is showing too? Maybe this is contagious. This is a great book to read to kids or on your own. The hilarious rhymes from Dawn McMillan and delightful drawings of Ross Kinnaird are guaranteed to raise a smile.