"Oooh! I'm going to be a granny!" she cried.
"You already are a granny, Granny." I pointed out.
". . . Oh yes. So I am!"
Nicholas's mum is having a baby. It's going to mean some big changes. His mum's getting ENORMOUS and Granny wants to live in the garden! But that's not all, because there's an even bigger shock to come...