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Slack day comes every April 27th. It is a day in which managers get to sit on their asses all day with no repercussions from ownership. Manager typically gets his jollys as he watches his work get done by someone being paid half as much,also see philing it
Owner:What are you doing today?
Manager:Nothing it's slack day!
Owner:Well I'm gonna go crack the whip on those bitches.
by Cream Waffer April 28, 2008
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