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The feeling you get when you wake up Saturday morning after getting no sleep during the week.

A weeks worth of hard work and late nights all catches up to Saturday morning no matter how late you sleep.
"After a week of teaching those little fuckers called '9th graders' I slept in today only to find myself Saturday Tired!!"

"I spent my whole week studying for finals and now I'm all Saturday Tired!"
by JadeWalking October 27, 2012
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