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The time between 9 PM and 3 AM on large college campuses in which true chaos is attained. Is defined by the presence of at least one ambulance, one firetruck and a pair of police squad cars being called to a dorm.
There was an especially bad Upfuckening last night - A microwave caught fire, a sophomore overdosed on tequila and two frat boys got into a fist fight with the RA.
by Professor Opuntia July 10, 2016
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