Back "in the day", it didn't take much of an excuse to have a social get-together and friends were always gathering for progressive dinners and the like. Soon a group was formed and because many of the members were in "the family way" it became known as the FFF or Friendly Fertile Flock.
Later, a few of us more "mature" members formed a second group and were immediately tagged the SSS or Senile Sad Sacks.
Great times. Great Fun.