I agree that there appears to be more to this than meets the eye. I see that these people originate from Norfolk. The medical authorities there have an expression. NFN. Normal For Norfolk. It's used (in a professional sense) to describe people who are, perhaps, slightly slower than the rest of us. You know the sort. People who originate from small villages where everyone is related. From what I've read, I think it might apply in this instance.
Gimme six!
