Dispation
A state of stress in which extreme distress and anticipation are combined to produce a state of emotional train-wreckage and memory loss solely for the information being tested. Prolonged dispation causes periods of anterograde amnesia. May also be linked to post-exam blackout drinking.
They didn't print enough copies of the exam? This dispation is killing me - I won't even remember how to write my name by the time I get a test!