mafuckaa Share definition Flag the thing that uuppii's say. A shortened and more exclaiming version of the explicit term, "mother fucker". Dude: Get some mafuckaa! Other dude: uh...k mafuckaa by alexsoxfan December 15, 2009 0 0 Get merch Get the mafuckaa mug. Buy Now — $32.95 See more merch