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To lash out violently and at random, often in a blind rage. Term taken from the 1990's incidents of workplace violence involving US Postal System workers.
I was so angry at work with the new workload, I was afraid I'd go postal.
by Unidyne March 11, 2005
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Aug 8 Word of the Day
A method of guessing on a multiple choice test that involves looking at the position of the second hand. If the hand is between 12 and 3 the guess is A. If the hand is between 3 and 6 the guess is B. Between 6 and 9 guess C. Between 9 and 12 guess D.
I passed my test! Thanks to the Clock Method
by ET4444 November 12, 2007
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2
To exact calculated revenge on co-workers or schoolmates, usually with a firearm, after being fired or expelled or just feeling extremely hard-done-by.

Software tester Michael McDermott shot and killed seven co-workers in 2000 after having his pay docked to cover back taxes.
A disgruntled former worker went postal today leaving seven dead, including two accountants he had accused of being 'Nazis' the day before.
by bee March 22, 2005
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3
to succumb to fatigue and tension, to be become violently angry(from a series of incidents from the mid 80s to the 90s where various postal workers went on shooting rampages)
I will not let him go postal in plain sight.
by The Return of Light Joker July 10, 2008
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4
To loose touch with someone for a long time. Not talk to someone in a while.
You go postal on me all the time and I only hear from you every 3 months.
by Boopboop June 03, 2007
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