waterfuck Share definition Flag To have sex in water. To have sex in a pool, jacuzzi, hot tub, shower, bathtub, ocean, or other body of water. After getting into the pool, we waterfucked for hours. waterfuck by Megan L. S. December 9, 2008 0 0 Get merch Get the waterfuck mug. Buy Now — $32.95 See more merch