omgwatermelon Share definition Flag when you're thirsty and have nothing else to drink and you see a delicious watermelon. man: *thristy, see watermelon* man: OMGWATERMELON omgwatermelon by kevin C August 10, 2004 0 0 Get merch Get the omgwatermelon mug. Buy Now — $32.95 See more merch