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17.
A shark attack is between a man and a woman, when they are watching a movie or some sort of other entertainment. during this entertainment the two shark specimens engage in some sort of sexual activity, the male shark attacks the female shark thus making the female shark moan.hence, resulting in a successful shark attack.

girl shark: OOOHHHHH!;D
girlfriend: deengg baby, that was an amazing shark attack last night, lets have another real soon!=]
boyfriend: ah yesss, anytime:]
by ah yesss, im an unknown March 18, 2009
 
1.
Right before you have sex have the girl lay down on the bed, preferably naked, then u crab walk from the edge of the bed up to her with ur boner in the air like a sharks dorsal fin...sound effects are not necessary but always appreciated
Ben: When have you ever done a shark attack?
Sock: Uh let me think, every time ive had sex ever
by Jmart25 May 26, 2009
 
2.
A Sexual prank where you pool the front of a woman's strapless dress or shirt down, exposing her breasts in the process in front of people. Also known as getting "Sharked".
"Wow, that was an amazing Shark Attack, right as she was accepting the award Alex Sharked her."
by Riley F. August 14, 2008
 
3.
Engaging in sexual intercourse in a body of water (such as a pool) while a woman is on her period.
dateline: los angeles, thousands of pools run red with uterine blood as people all over the city practice the deviant sexual practice known as the "shark attack"
by Kuhrazy November 23, 2005
 
4.
When a man and a woman are spooning in bed and the woman gets poked by an unsuspecting boner.
Girl: I've been trying to sleep all night but I keep getting shark attacked.
Guy: :-)
by Clickitorurbandicit July 08, 2010
 
5.
A Facebook game where an attacker sends at least a full line of emoticon sharks (^^^) through Facebook chat to a victim. Then the attacker quickly goes offline before the victim can respond.

The only counter to a shark attack is for the victim to write "NOSE PUNCH" before the attacker gets offline.

Any typos result in a direct disqualification.
Aw fuck, I just got Shark Attacked!
by FrodoLives28 October 25, 2010
 
6.
The act of recieving oral sex, and unexpectedly recieving teeth in the process
(Jessica) What's on your junk Kobe?

(Kobe) That blowjob Zane gave me last night. . . . total Shark Attack
by CARBURNETMMINGSATON October 16, 2009
 
7.
When you have aggressive sex with your lady friend in a pool of water, preferably an ocean, while she is on her period leading to a scene reminiscent of a shark attack!
My girlfriend forgot to tell me she was on her period when I was banging her in the pool and it looked like a Shark Attack scene from Jaws!
by Ricky Chinchilla April 09, 2011