An ugly thing that college and high school students must deal with at the end of a semester/quarter/trimester. Very unpleasant to deal with. When dealing with a "final", one usually drinks excess amounts of coffee and sleeps very little.
sad student: I have a 3 hour final in my Chem 3B class and I think I'm gonna bomb it.
sympathetic friend: I'm sorry, I feel your pain. I have a lab final tomorrow in Bio 1A.
sad student: bummer