What is Rusty Jack Knife?
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A Rusty Jack Knife is a slang term for a geriatric man who porks women much younger than him. The "Rusty Jack Knife" comes in to play as a reference to his penis, which, aged, is rusty (hard to get erect), jacked (may have liver spots or warts), and knifed (smaller than the original youth size.)
"God damn! That old guy is a Rusty Jack Knife!"
Random Words:
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When a Man slaps his penis on the back of his partener's neck, leaving a mark in the shape of his penis at the point of impact.
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