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The act of dozing off while masturbating, or jerking off while asleep.
“My boyfriend’s great at slumberjacking, he really knows how to handle wood while he saws logs.”
by PostModernValkyrie June 04, 2018
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2
Masturbating a predefined sleeping apparatus, such as a bed, sleeping bag, or hammock. Often with the intention of passing the fuck out after.
I can't go tonight bro, gonna hit the hay, maybe do some slumberjacking first.
by Shaboyjay August 14, 2014
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