G'day,
Some years ago, let's say when I was 40, some young cousins of mine asked me, "Where did Clifton Clowers live?". Instant response, "Wolverton Mountain." To my surprise this resulted in howls of laughter. They then explained that it was a trivial pursuit question that none of them knew, but in a footnote to the answer was the comment that any 40 year old would know. I'd just proved it right.

Cheers,
Alan