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1.
1. When a woman knowingly lies with a man who is beholden to another, with specific intent of actualizing divorce once both parties are caught in the act.
2. The act of separating a man from his penis so as to hold it for ransom.
Wife to adulteress, upon catching said party engaging her spouse mid-coitus: "Ain't gon' be no motherfucking dicknapping up in this motherfucker. Please believe."

"Damn girl, I see Lorena Bobbit, but I woulda dicknapped that backwoods motherfucker for all he was worth."
by Hishungness June 18, 2013