Mental timeline
   8:00 p.m.:  I'll be in bed by midnight.
10:00 p.m.:  OK, no way will I be in bed by midnight.  I guess I'll skip History at 8 and go straight to Poetry at 9:30.
3:00 a.m.:  Yeah, Poetry ain't happenin' either.  I'll be there in time for my test at 2.
5:00 a.m.:  I hate life.  (But the research paper and the PITA annotated bibliography to accompany it are 
done!)