At one point, a man knocked on the door, was greeted heartily although no one knew who he was, and was led to the bar in the basement.
He sat there happily for a couple of hours before a strange light dawned on his face. "You know," he confided to his host, "I wasn't even invited to this party. I just came over to tell you that some of your guests' cars are blocking my driveway."
The guest continued, "My wife's been sitting out in the car waiting for me to get them moved."