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An older man was married to a younger woman. After several years of a very happy marriage, he had a heart attack. The doctor advised him that in order to prolong his life, they should cut out sex.

He and his wife discussed the matter and decided that he should sleep in the family room downstairs to save them both from temptation.

One night, after several weeks of this, he decided that life without sex wasn't worth living. So he headed upstairs. He met his wife on the staircase and said, "I was coming to die."

She laughed and replied, "I was just coming down to kill you!"