Sarah arrived home from work to find the children bathed, one load of clothes in the washer and another in the dryer, dinner on the stove, and the table set. She was astonished - something's up.

It turns out that Jack had read an article that said wives who worked full-time and had to do their own housework were too tired to have sex.

The night went well, and the next day she told her office friends all about it.

“We had a great dinner. Jack even cleaned up. He helped the kids do their homework, folded all the laundry and put everything away. I really enjoyed the evening.”

“But what about afterward?” asked her friends.

“Oh, that was perfect too. Jack was too tired...”