(A six or seven year old boy comes into the children’s bookstore, his mother trailing behind him.)

Mother: “Go on then! Ask! She won’t know what you’re talking about and then you can stop wasting my time!”

Boy: “Hello!”

Me: “Hello.”

Boy: “I want a book.”

Me: “Well you’re in the right place.”

Boy: “It’s about a boy. Who lives with a caveman. He’s got a funny name beginning with ‘S’.”

Mother: “There. Now you know there’s no such book.”

Me: “That wouldn’t be ‘Stig of the Dump’ would it?”

Boy: *jumping up and down* “Yes yes yes! I told you mummy!”

Mother: “Don’t contradict me in front of my son!” *starts walking her son out of the shop and still talking to me* “You read too many books!”