May-December couple

Posted by Walter on September 04, 2007

The title of a recent article in by J Bohannon Science was "Fertile times for May-December couples". Any ideas where the phrase "May-December couple" comes from?

• May-December couple Smokey Stover 04/September/07
  • May-December couple Baceseras 04/September/07
    • May-December couple Victoria S Dennis 04/September/07