Vom-ugly Share definition Flag Something or someone that is so ugly it causes involuntary regurgitation. Sean: "Holy shit man I just spewed a bit in my mouth."Derrek: "I know dude, that chick was vom-ugly." Vom-ugly by siamly April 7, 2010 0 0 Get merch Get the Vom-ugly mug. Buy Now — $32.95 See more merch