Serial Killa Share definition Flag One who kills over and over again till they satisfy thare urges for blood. Otherwords a Juggalo Yo Tweak you see that serial killa over thare reppin the hatchet?? Serial Killa by SoOPa BaLLz May 29, 2008 0 0 Get merch Get the Serial Killa mug. Buy Now — $32.95 See more merch