Vodka IN watermelon! Get a turkey baster. Drill some holes randomly across the top and upper sides of the melon. Fill the baster with vodka, insert as far as possible into a hole, and squeeze until you meet resistance or the vodka start squirting back. Repeat with remaining holes. Let sit, ideally in cold place (fridge, cooler with ice, etc.). Slice, cube, or make balls, and enjoy.