If I recall correctly, there had been reports of Nighttime Badness on campus shortly before writing this strip, which likely influenced me here.

Of course, Nighttime Badness is usually only news to the dudes.  Realistically, Joyce would have already had this concept ingrained into her.

UPDATE: The Friday prior to this strip I was in Bloomington, and there was a front page story in the newspaper that day about an incident of Nighttime Badness…. involving only dudes.   If I were a religious man, I’d think God allowed Nighttime Badness to happen to some fellow just to teach me a lesson.  But I’m not, so I don’t.  That would be a pretty awful God anyway.