jack knuckles


a chronic, habitual masturbator. someone who is always giving himself a tug. typically addicted to p-rn, stalks facebook, insta and other media for pics to fap off to.

may also be used as a derogatory term for somone who’s a pos.
my neighbor is a real jack knuckles. he’s always giving himself a w-nk online.

my uncle is a jack knuckles. i catch him tossing off every time i walk past the den.

f-ck that guy. he’s a jack knuckles.

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