Top definition
For thoes males in University and College who are confined to studying and jacking off, usually one after the other. Study jack, Study jack Study jack, Study jack...Judy Stack
Ryan: Hey bro what did you do on the weekend?
Kevin: Aww man I have a midterm this Tuesday so I was Judy Stackin' for 2 days straight.
Ryan: WHAT!?!?!
Kevin:Study jack
by laxmanbt November 22, 2007
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