To use a big knife to stab the shit out of someone's asshole or cunt.
DuckyBubbles05 is an insolent bitch, so now I gotta knife fuck her
by Black Artemis November 30, 2004
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Matt stabbed Gennie in her hatchet wound with his fuck knife over and over until the both came. It was during her period so the end result was a mess of blood and cum
by Hank Contos May 7, 2015
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A person who is fucking dumb as all hell and don’t know what there doing with there life- also could be called a dickwad or a wad of dick
Shane: Wow John, your a fucking knife
John: yeah I know
by Thee Fucking Knife September 24, 2018
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