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1.
To skip more than half of the hours you are scheduled to work in a given day.
"Man fuck this job, I'm PAKing, be back in 5 hours."

A group of students are at a lecture at West Virginia University. When the students realized that this lecture is of no importance, they say to themselves, "We're out of here, we're PAKing!"
by A fellow PAKer January 25, 2013