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That period between about 6am and noon when, after staying up all night, you find yourself both strangely energized and happy, as if drunk and high at the same time. This will be followed swiftly and suddenly with an allnighter crash, which in turn becomes an allnighter hangover... but for the time being, you've achieved a state of serenity that you will seldom feel again... at least until your next term paper.
I ran on my allnighter high all the way through my first three classes. Then the crash hit, and I wanted to die.
by someguywithajob December 15, 2011
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