A little boy is born, and has only his head

He lives like this for years, until one Christmas, he finds a torso under the tree. He says “Mom! Do you think next year Santa will bring me some arms?” “He just might.” She replies. The next year, sure enough, there’s a pair of arms under the tree. Again the boy asks his mom “Do you think next year I’ll be gifted some legs?” “Maybe!” His mother says. The next year, there are his legs. He finally has all his body parts. “I must go across the street and show my friend Johnny!” He says. So he goes out into the street… And gets hit by a car. …He should’ve quit while he was a head.