Dave returned from a Doctors visit one day and told his wife Doreen that he had only 24 hours left to live.

Wiping away her tears, he asked her to make love with him. Of course she agreed and they made mad passionate love. 6 hours later he went to her again and said "honey, I only have 18 hours left to live, maybe we can make love again?" Doreen agreed and they made love.

Later, Dave was getting into bed and he realised he only had 8 hours left. He touched Doreens shoulder and asked if they could do it one more time. She agreed, and after they had finished she rolled over and fell asleep. Dave however, heard the clock ticking in his head and he tossed and turned until he was down to 4 hours left. He tapped his wife on the shoulder to wake her up "Honey, I only have 4 hours left, could we....

?" His wife sat up abruptly, turned to him and said "Listen Dave, I have to get up in the morning..you don't!!"