Jamockin Share definition Flag pertains to a person that is hideous, beastial, ugly, monstrous. a way to describe someone that is so ugly that they combine all of ugly words togther. Did you see what Jessica wearing?? She looked like a big jamockin in that dress. Jamockin by RennRenn July 15, 2009 0 0 Get merch Get the Jamockin mug. Buy Now — $32.95 See more merch