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When your brain is so scrambled after an all nighter that you have actually convinced yourself that night is spelled "knight."
Darren: Dude, how did you manage to achieve the impossible and actually manage to fail a Microeconomics test?

Daniel: Bro, I have no idea. I even pulled an all knighter for the test!

Darren: No wonder you failed the test....
by I_need_sleep September 29, 2011