my Grandmother was reputed to have said of her longevity (60 ish at the time) commenting on her own mothers life

"I am older than my mother would be if she was still alive" to hoots of laughter of my parental generation - sadly I was but a twinkle at the time so only have the reports.

And from a Peanuts cartoon "xyz is so old she can remember when digital watches didn't exist....." harsh but plausible.