The act of entering the vagina by sliding from a distance away then flopping around
Hey dude I just gave my girlfriend a greasy dolphin
by Pororo_117 July 27, 2017
After fisting, the act of wiping the excess lube off on your partner's body.
She made me come, but then she gave me the greasy dolphin.
by narkymcnarkerson August 30, 2010