flooded cave Share definition Flag When a male urinates inside the vagina or anus of a female or the anus of a male during sexual intercourse. I had to piss so bad but I didnt want to stop fucking her so I have her a flooded cave. flooded cave by Erik L. July 25, 2006 0 0 Get merch Get the flooded cave mug. Buy Now — $32.95 See more merch