Couple was invited to a swanky costume party. Unfortunately, the wife came down            with a terrible headache and told her husband to go to the party alone. He protested,            but she said she was going to take some aspirin and go to bed and there was no need            for his good time being spoiled by not going. So he took his costume and away he            went.            The wife, after sleeping soundly for about an hour, awakened without pain and, as it            was still early enough, decided to go the party.            Since her husband did not know what her costume was, she thought…