There came upon me, not rationally but massively, the conviction that if I continued to sing this song then my parents would die. And yet I could not stop singing it. There I would be, walking blithely through the house, or walking blithely across the garden, and then realize that for the last few seconds, I had, yet again, been singing of Maxwell Edison and his homicidal hammer, and a great dread would invade me, because it meant, this singing, the removal of my parents from the world.