It was written by Quentin Blake and John Cassidy. Blake is one of my all time favorite illustrators (I've mentioned him several times).
I believe it was a book written for children, but I'm going to use it anyway!
Sometimes kid books have more to say than ones for grown-ups (though that is what is perfect about Carla's latest book because it is for adults and kids -- anyone!)
My computer isn't working right or I'd give you a link to Carla's website and to Quentin's. The picture is a link to Amazon for that book -- though it is out of print (but there are still copies around).
I'll let you know how it goes!