Fruitless All Nighter

In college I frequently pulled all nighters And showed up for morning tests somewhat less brighter With caffeine and pizza I struggled to stay awake And was always prepared for exams to take To excel on the curve, you had to be a fighter For twelve hours straight, I crammed names and dates in my head History consumed me and I never went to bed Memorization proved a successful technique But my brain grew weary and my eyesight was weak I always entered the classroom feeling half dead But never did I experience more dismay Than I felt when I walked into a class one May To find I was the only student in the room Within there was quite a sense of impending doom The test, you see, had been scheduled for the next day *Limerick series for Paula's "The Light Is On, But Nobody's Home" challenge