M/F/K Posted in M Best definition M/F/K Marry, Fuck, or Kill? New game… Golden Girls… M/F/K… and GO difficulty: two of them are already dead, you sick bastards From a fark.com thread How satisfied are you with the definition? Looking for M/F/K meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 49 times.