An architect, an artist and an accountant were discussing whether it was better to spend time with a wife or a mistress. The architect said he enjoyed time with a wife, building a solid foundation for an enduring relationship. The artist said he enjoyed time with a mistress, because of the passion and mystery. The accountant said he liked both.
“Both?” chorused the others.
“Yes,” said the accountant. “If you have a wife and a mistress, they will each assume you are spending time with the other woman, which means you can go to the office and get some work done.”