Ha ha.

Joe rang in to work one morning. "Boss" he said "I won't be in today. I feel really rough - my head aches, my stomach aches and my legs feel like rubber". "Oh dear" said the boss "I really need you in today Joe - we've got a big rush job on. Tell you what - when I wake up feeling grotty and don't fancy coming in to work, what I do is make mad passionate love to my wife, and then I always feel better and ready for work. Why don't you try that?" A couple of hours later, the 'phone rang again. "That was great advice boss" said Joe "I did what you said, and I feel much better. I'll be with you in half an hour or so. Oh, and by the way - you've got a really nice house!".