HAVEN'T KEPT UP YOUR END

   I am more athletically inclined than my husband and
frequently engage in biking, canoeing and other strenuous
activities. Several years ago, when my husband was 60, he
came inside after a day of yardwork and collapsed into his
favorite easy chair, bemoaning the aches and pains of his
advancing age.
   Attempting to comfort him, I reminded him that when we
were newlyweds, we had looked forward to growing old
together.
   "Yes," he replied, "but you haven't kept up your end of
the bargain."