Term derived from Jaws which refers to a womens clitoris that is engorged, peeking out of the labia refering to Jaws fin out of water.
that bitch over there had a huge shark fin.
by IVIunchy January 1, 2005
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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
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A woman that has breasts that sag downward to a point with a curve that closely resembles the shape of a shark fin.
Guy 1: Dude check out the ass on that one.

Guy 2: (scoff)take a better look its shark fin.

Guy 1: You gotta be shitting me....(takes a second to notice)FUCK! Stab my eyes out with a pen.
by c.u. student March 18, 2008
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A person of any sex(usually female) that has breasts that sag in such a way that they closely resemble the shape of a shark fin. Sagging downward to a point.
Guy 1: Dude check out the ass on that one.

Guy 2: (scoff)take a better look its shark fin.

Guy 1: Fuck, that ruined my whole afternoon.
by c.u.wrestler March 17, 2008
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When you float on your back in a body of water with an erection that sticks out like a shark finn.
I'm gonna go shark finning around that bitch in the deep end of the pool.
by D-Rye August 5, 2013
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The art of tucking ones junk in the upward position exposing a portion above the belt line.
Did you see how hot the substitute teacher was? Yeah dude I had a shark fin all class.
by Goodmag July 9, 2013
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To uppercut someone wearing a hoodie from behind, causing the hood to turn inside out. The resulting "fin" is flattened, and stood up straight.
by K Stizzokes December 11, 2006
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