An elderly carpenter told his contractor that he planned to retire from house building to enjoy more leisure time with his family. The contractor asked him to build just one more house as a personal favor. The carpenter agreed but lacked enthusiasm for the work, using shoddy workmanship and materials. When finished, the contractor handed the carpenter the house key, revealing that the house was a gift for the carpenter himself. The carpenter was shocked, realizing that if he had known, he would have built the house much better. He now had to live in the subpar home he had constructed.