Mollusk sat alone in his room smoking. He didn’t have any windows, naturally, so the air became quite thick with smoke. If he extended his arm out in front of himself he could hardly make out his hand. Mollusk didn’t mind this, for he had always been embarrassed of his hand, and this impression, though he knew it to be false, brought Mollusk a small amount of joy.
Then somebody knocked on Mollusk’s door. “Yes,” Mollusk said as flatly as he could.
“May I come in?” It was his roommate.
“Of course not.”
After a moment, the roommate’s feet could be heard walking slowly from Mollusk’s door.
Mollusk hadn’t been outside in four days. He had left his room, of course, but not his building. After four days of being inside one tends to forget why one has decided to stop going outside in the first place. Or at least this was the case with Mollusk. On his fourth day of confinement Mollusk couldn’t say why it was he had decided to stay indoors. He tried to think of the reason, but like most things Mollusk tried to do, he failed. So, giving up on determining the reason, Mollusk decided he would sit smoking in his room until he could think of something better to do with himself.