My 6 year old likes saying to me 'You were born last century, weren't you Mummy.'
It's true, I was, but hearing it doesn't half make me feel old and I'm not yet 30.
Our parents were born in the same century as us so we could never have said that to them.
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Old aunts used to come up to me at weddings, poking me in the ribs, cackling and telling me
'You'll be next.' They stopped when I started doing the same to them at funerals.