hairy dolphin Share definition Flag A sexual act in which a man ejaculates on a females back, then rips out some pubic hair and tosses it on the semen. That bitch Jenny wouldn't let me bust in her mouth, so I gave her a hairy dolphin. hairy dolphin by MKUltr4 February 10, 2010 0 0 Get merch Get the hairy dolphin mug. Buy Now — $32.95 See more merch