While my friend was working as a receptionist for an eye surgeon, a very angry woman stormed up to her desk.

"Someone stole my wig while I was having surgery yesterday," she complained.

The doctor came out and tried to calm her down.

"I assure you that no one on my staff would have done such a thing," he said. "Why do you think it was taken here?"

"After the operation, I noticed the wig I was wearing was cheap-looking and ugly."

"I think" explained the surgeon gently, "that means your cataract operation was a success."