Like one of the terms of "Pillow" a Pillow Jacker rubs his penis and testicals either up and down the pillow or in and out of the pillowcase until he ejaculates all over it or inside it.
Man 1: "Dude why is your pillow so damn hard?"
Man 2: "Sorry, my son's kind of a pillow jacker"
by ObservantRealLifeStoriesDude September 27, 2010
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