watermelon cum Share definition Flag 1.its the nastey tasting juice from a watermelon sour 2.when a guy cums in to a watermelon 1.that watermelon cum was nasty 2.dude I watermelon cumed last night watermelon cum by Kat angel eyes July 18, 2016 0 0 Get merch Get the watermelon cum mug. Buy Now — $32.95 See more merch