A word to use if you're sick of taking the time to say motherfucker. Plus it just has a better ring to it, and is superior to the crappy gangsta version mofu.
Scenrio with motherfucker:
Some asshole cuts you off on the highway. You lean out the window and yell "MOTHERFUCKER!" at him and by the time you finished yelling motherfucker he has thrown a tire iron at our head, knocking you out, and you crash and die.

Scenrio with malfuck:
Same thing happens on the highway. You lean out and yell "MALFUCK!" and have time to squeze back into the window while a tire iron goes zooming past your head. You run the son-of-a-bitch off the road.
by Izz The Frizz January 8, 2008
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Mother F---er: But shortened. Used by Jay Rock in Trailer Park Boys
"Why dont one of you Malfuckers go down to Canadian Tire Malfucker and pick up another one of those orange Malfucking so we can finnish this Malfucking game"
by Shoenami July 23, 2013
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