Just this past Saturday we were at my wife's family reunion. This year's historic came around asking for someone to say 'Grace'. The fit I was sitting next too, my wife's cousin father , who was one of the older generation, said "I don't know who Grace is", I just looked at my wife and said, "she died 30 years ago"
My wife almost fell off her chair laughing.
He is not in the best of health and probably has never seen Xmas Vacation, but this is something my wife and I do a lot when someone asks that question.