Keeping secrets from children?

Like I mentioned yesterday, we went for a walk with a family of friends. The parents have two children, a boy and a girl, both older than Wolfie. And theytold us recently of a question their son asked them: "Do you keep secrets from us?" The mother reply: "We don't keep secrets, however we don't not tell you what you don't need to know." That was a good answer and a funny one and they asked me to add it to the blog (I didn't know they still read it) as a new great unknown line. I am very happy to oblige.