Spooked at School

Today at school, I was just relaxing in class when, all of a sudden, I passed out. I successfully slept through the entire period. But, at the very end of the class someone decided to be nice and wake me up so I wouldn't be late for my next class. They slammed a book on my desk as hard as they possibly could! I was really pissed because, I was having a nice dream. Needless to say, he ruined my whole day! Now, I'm curious. Have any of you had something similar to this happen to you?