Blitz Studying

The act of quick-fire studying or cramming information the night before or even hours before an exam.

Todd: I hate that we have the Physics test today. Did you atleast study for this one?
James: Just another night of blitz studying, don't worry about me.

annuisance

When someone or something is so extremely aggravating that it's just not enough to call them an annoyance or a nuisance, so you use a portmanteau of both.

Jeff: My little brother is getting on my damn nerves, he's so annoying.
Mark: My sister is even worse, she's the literal definition of annuisance.