I don't consider my dad old, exactly, but I know he does think about his grandparents a lot. As I knew my great grandmother, we'll sometimes talk about her. Sometimes we tease him that he's like her in that he can never remember what pain he was complaining about. She was like that, too. She walked with a cane, and had one bad leg, but sometimes she would forget the pain in that leg, and complain about the pain in her other leg. She would argue with the doctors about it. They'd take X rays, and she would get mad because they told her her other leg was fine, but she said it was that leg that hurt most, and they most have switched it. She was a bit of a hypochondriac, but she was always so much fun.
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"Of all God's creatures, there is only one that cannot be made slave of the leash. That one is the cat. If man could be crossed with the cat it would improve the man, but it would deteriorate the cat." - Mark Twain