Dolphin Fin 

The act of slapping somebody hard across the face with the bottom of a flat soled shoe, creating a satisfying noise as the shoe meets the skin

Ashley took off his right shoe and Dolphin Finned James across the face!

Dolphin Fin by Jonny5ive October 17, 2010

dolphin fingers 

To be outstanding at something, nearly achieve your goal only to let it slip in a ridiculous way

The Arsenal team are good but watch how they flop by the end of this season, they got dolphin fingers for real!

dolphin fingers by Mr Clumsy May 29, 2016

white-finned dolphin 

An aquatic maneuver in which, whilst swimming under water, the swimmer pulls down their bathing suit and then surfaces only their bare ass (like a dolphin surfacing its dorsal fin) to unsuspecting fellow swimmers and beach-goers. The white-finned dolphin is ideally executed by one with the palest of asses.

"I pulled a white-finned dolphin at the beach today."

white-finned dolphin by biffrichards July 6, 2006

Dolphining 

Dolphining is the practice of posting a status message by using someone else's Facebook account. The status message is intended as a prank, and has the purpose of showing the world that the owner of the account was foolish enough to allow somebody else to access his/her Facebook account. Examples of foolishness include forgetting a personal computer unlocked, or leaving a mobile phone laying around.

The name comes from the fact that the status message has to contain the word "dolphin," or be talking about dolphins. This way, whoever sees the messages instantly knows about its nature and can laugh at the victim.

After realizing that he/she has been "dolphined," there is a strict honor code that the victim has to follow. In particular, the message can be deleted only if none of the victim's friends has liked it yet. If the post receives at least one like it will have to be left unchanged and accessible forever, as a testimony of the victim's lameness in allowing someone else to access her Facebook.

Ali has been victim of dolphining four times in the last two days.

Dolphining by dolphin master May 9, 2014

Dolphining 

The noise in which a female makes when a man's penis slips into the wrong hole.

"Mark, I heard Sarah dolphining again last night. You guys have got to stop using KY."

Dolphining by Teiger May 1, 2016

dolphinning 

Lesbian version of "sharking." When a female pursues another female tirelessly. Followed from the quote, "dolphins are just gay sharks."

We going dolphinning this weekend?
Yeah, gotta chase some hot lesbian ass.

dolphinning by golddust1902 March 4, 2015

Dolphining 

When one receives oral pleasures so great that they begin to spasm and thrust their upper body and legs in tandem like that of a dolphin in the seas.

Bobby got the sickest bj and started dolphining like a madman.

Dolphining by Big C Money Shot December 26, 2017