Good morning, class. Today we are going to learn about Earthlets.
They come in four colours. Pink, brown, black or yellow . . . but not green.
In this way Dr Xargle, our friendly alien teacher, begins to teach his class about humans and babies.
This is an hysterically funny book, with a particularly wry look at our natural methods and practices in bringing up babies: look out for the egg-mangle will you ever want to eat it again?