1661 syndrome
n.— «The 1661 syndrome—whereby a woman (and it almost always is a woman) looks like a bouncy-tressed, pert-bottomed teenager from behind and a grandmother from the front—has become a cultural joke.» —“Age-old dilemmas” by Lisa Armstrong Times (London, England) July 18, 2007. (source: Double-Tongued Dictionary)
Further reading
The phrase old as Methuselah describes someone quite advanced in years. In ancient scripture, Methuselah was a man who somehow lived to the ripe old age of 969. Plus, a heartwarming book for children tells the story of how a Puerto Rican family...
Rose in Lebanon, Virginia recalls a phrase passed down from her great-grandmother: The night before the first day of school, parents would come into the children’s bedroom and say in a singsong voice: School butter, school butter. This...