Overheard in the classroom, after class:
Student: I'm sorry I missed class last time. I just couldn't get out of bed.
Professor: Oh dear. I'm sorry to hear that. Did you have that flu that's going around?
Student: No, but I've only been sleeping about 3 hours a night and it caught up with me.
Professor: That sounds terrible. I'm concerned about you. You can't get by on so little sleep. Are you worried about something?
Student: No. But my friends and I are in the middle of a really great adventure in Dungeons & Dragons, and I'm the Dungeon Master.
Professor: Well, I played when I was in college and I know how engrossing it can be. Just be careful you aren't jeopardizing your grades and your health with too much D&D and not enough sleep. Keep things in balance, you know?
Professor (thinking): Let me tell you about the time we found a +3 magic war hammer!