I Need a New Bum!

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 blueor 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.Certainly it is for readers - I Need a New Bum! has been in the NZ children's bestseller lists for years, and it reprints at least annually. Meanwhile it has been a regular on bestseller lists in the US and UK, with hundreds of thousands of copies sold.