"Costume Party" joke

A couple was invited to a swanky masked Halloween Party. The wife got a terrible headache and told her husband to go to the party alone. He, being a devoted husband, protested, but she argued and said she was going to take some aspirin and go to bed, and there was no need of his good time being spoiled by not going. So he took his costume and away he went.

The wife, after sleeping soundly for one hour, awakened without pain. As it was still early, she decided to go to the party. Since her husband did not know what her costume was, she thought she would have some fun watching him to see how he acted when she was not with him.

She joined the party and soon spotted her husband cavorting around on the dance floor, dancing with every nice woman he could, copping a little feel here and a little kiss there. His wife sidled up to him. As a rather seductive babe herself, he left his partner high and dry and devoted his time to the new stuff that had just arrived.

She let him go as far as he wished; naturally, since he was her husband. Finally he whispered a little proposition in her ear and she agreed, so off they went to one of the cars and had sex. Just before unmasking at midnight, she slipped away, went home, put the costume away and got into bed, wondering what kind of explanation he would make for his behavior.

She was sitting up reading when he came in and she asked how the party was. He said, "Oh, the same old thing. You know I never have a good time when you're not there."

Then she asked, "Did you dance much?"

He replied, "I'll tell you, I never even danced one dance. When I got there, I met Pete, Bill Brown and some other guys, so we went into the den and played poker all evening. But I'll tell you... the guy I loaned my costume to sure had a really good time!"