Less than a year later, he was in court filing for a divorce.

"OK," the judge said,

"Tell the court why you want a divorce."

"Well, your honor," Dan started,

"Every once in a while my sister in law 

would come over for a visit,

and because she and my wife are so identical looking,

every once in a while I'd end up making love to her by mistake."

"Surely there must be some difference between the two women."

the judge said.

"You'd better believe there is a difference, your honor.

 That's why I want the divorce," he replied.

.