When you stimulate a guy anully using both middle and index fingers.

The name comes from both the shape of the fingers as well as the manner in which they "dive" in and out of the anus. Dolphin sounds are optional.

Often used in conjunction with tossing the salad.
Bro1: I have was having gay sex and i gave my buddy a smelly dolphin.
Bro2: Dude that's foul.
by BukakeRooster7 July 26, 2007
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