Raspberries was born when my son Teddy was four. Teddy banged his shin outside our cottage and was weekping, "I broke my leg." "Nooooo," I said, "It's just a little bump!" "Little bump!" he wailed. "If it was you it would be a big bump - with me it's nothing." "OK," I said. "I'll put you in a nice warm bath and you'll be fine." I drew the bath, put him in and he shouted, "My leg's floating away!" "No. It's refraction." "What?" he said. "Never mind. Here's a funny story to make you laugh." "Go," he sobbed. "Once upon a time there was a sad farmer. Everything went wrong in his life." "That's a funny story?" Teddy grumped. "Will you let me finish? Everything went wrong until one day the farmer foudn some wonderful raspberries and he ate one and sprang up singing 'Rassssssberreeeeeees'"