slizzmonster Share definition Flag A slizzmonster is someone who is a total prick, asshole, etc. Damn, my mom is being such a slizzmonster, she blocked my Itunes account because i ran up an 100$ charge. slizzmonster by slizzmonster1 June 14, 2009 0 0 Get merch Get the slizzmonster mug. Buy Now — $32.95 See more merch