In the story Stephen King gives a powerful use of foreshadowing. In the story, Jimmy mentions, " Did you put on any weight?" And Morrison replies, " Yes. A little too much, in fact." Because Morrison has gained weight by smoking, he might have a suprising event at the end of the story.
Which in this case, it involves his wife loosing her fingering. It was a way so that he would be able to loose weight instead of gaining weight.