It's hard to wait for a new baby to join the family, especially when it's still growing inside Mum's tummy. But when Dad describes the size of the baby at each stage, one little girl imagines, while she waits, all the fun she can have with her baby brother as a teeny-tiny poppy seed, then a grape, then a lemon. But she's not quite sure how she feels about having an avocado for a brother.