When a person wearing a hoodie is uppercutted in the hood from behind. The resulting inside out hood is flattened, thereby looking like a "shark fin"
OMG TRAVEL SIZE2, Youve been shark finned!
by K Stizzokes December 9, 2006
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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
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1: A traditional soup found in Chinese and Vietnamese cuisine. Usually served during special occasions. Made with Shark Fin and many other ingredients that include shrimp, chicken stock, mushrooms, and scallions.

2: When a man lies down on in the sand on a hot day with an erection, forming a pool of sweat underneath the erection, the pool of sweat representing the "broth" and the erection the "shark fin".
1: I was throughly disappointed that the restaurant ran out of shark fin soup. This was the only restaurant in New York that serves the classic dish.

2: Tom: Man, I still can't believe we got kicked out of the nude beach.

Larry: The lifeguard caught us with shark fin soup, theres nothing we could do man.

Tom: That is true, my shark fin soup smelt disgusting.
by Tommy Twoshoes September 16, 2018
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Noun: An act of defecation in which an increased amount of feces causes a portion of the pile to exceed the water level in the toilet bowl, resulting in an unusually strong smell.
“I just dropped a shark fin poop – don’t go in there for about 35-45 minutes!”
by Big Nu April 7, 2019
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When a gentleman would place his hands together as about to pray.. while his lady friend would be on all fours...

With out warning all eight digits would be finned right up the lady's grit pipe... the gent would gracefully clap while performing his moment of triumph
Fuck me bruv, got so nutted last night this sort let me use the double shark fin clap
by Munky innit January 3, 2017
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When you strip down nude and put a flip flop or sandal in you but crack and do a push up. You look like a shark who cares about upper body strength.
I bet you 2 ramen you wont do a shark fin push up in the red yard.
by The Only Chez February 23, 2020
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A mountain bike feature leading into a jump with a lip at a 45 degree angle. Leads to a sideways jump and requires the rider to twist his bike mid-air to prepare for the landing. The feature sticks out of the ground like the fin of a shark that's crossing the trail.
Rider 1: Dude, see me send the shark fin??
Rider 2: Totally. That was sick, bro!
by Radel-Held April 3, 2023
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