Shark Finning

The act of swimming on your back with an erect penis, whilst helicopter dick-ing, to give the the affect of looking like a great white on the prowl

Guy #1: Why is Jim getting arrested?

Guy #2: He was caught shark finning in in the public pool!

by ThreeLegsG June 5, 2015

shark fin

a blowjob given from the back by tucking the penis behind your legs.

"I pulled my junk behind legs and she gave me a shark fin"

by captain donkey punch May 17, 2010

Shark Fin

When ones penis tip protrudes through a hole in their underwear or clothing, either accidental or on purpose, resembling a shark fin cresting the surface of the ocean.

Tim's rush to leave the bathroom left his penis tip dangling from his open fly, revealing his shark fin to the entire office.

by Twatfacekilla326 October 30, 2015

Shark fin

Sneaking up behind someone and using four fingers jamming them into their clothed butt crack while screaming "Shark fin" in order to disrupt theiron train of thought

I just totally gave that chick a Shark fin when she was giving me a hard time

by CnDn_bacon90 November 27, 2016

Shark Finning

Verb
To swim backstroke with an erection.

'Did you see Ralph? He was totally Shark Finning it over that lifeguard.'Said Paul.

by SickyMike October 17, 2014

Shark Fin

Inserting a hand (or hands) into a persons orifice. The hand must be oriented in a manner that the four fingers lay on top of each other for the "insertion". The thumb points upward to resemble a sharks fin.

Dick and Fanny were having some quiet time. Fanny grew excited, resulting in Dick delivering a "Shark Fin".

by jama76 October 11, 2011

sharks fin

When one finger just isn't enough, so you have to use 4 fingers to dig into your itchy asshole.

My ass was itching so badly, I had to break out the sharks fin.

by Bufftick July 28, 2017