Barry returned from a doctor's visit one day and told his wife Carol that the doctor said he only had 24 hours to live. Wiping away her tears, he asked her to make love with him. Of course she agreed and they made passionate love.
Six hours later, Barry went to her again, and said, "Darling, now I only have 18 hours left to live. Maybe we could make love again?" Carol agreed and again they made love.
Later, Barry was getting into bed when he realized he now had only eights hours of life left. He touched Carol's shoulder and said, "Darling please? Just one more time before I die?" She agreed, and then afterwards she rolled over and fell asleep.
Barry, however, lay there awake and listened to the clock ticking in his head, tossing and turning until he was down to only four more hours.
He tapped his wife on the shoulder to wake her up. "Darling, I only have four hours left! Could we...?"
His wife sat up abruptly, turned to him and said, "Listen, I'm not being funny Barry, but I have to get up in the morning and you don't!"