When in a position where a polite person would act against his/her own self-interest, you remain assertive for personal gain.
"Hey man, I wasn't sure whether or not you wanted a sandwich so I just got the one."
"Here, I'll take this one. You go get yourself another sandwich."
"What the...?"
"Sharkbite, bitch!"

"Lets cut to the chase -- There are two types of people, sheep and sharks."
by Dypsymphuliac December 26, 2009
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While giving your partner anal, at the moment of ejaculation bite her shoulder to make things even tighter!
I cumed like the thunder when i gave the wife a sharkbite last night...
by Billy Milly July 20, 2005
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Non-chalant absurdity with a dash of embarrassment.
A guy is walking down the street in the East Village. A dog is tied up to a pole, waiting for his owner inside a cafe. The dog jumps towards the man and bites his crotch. The man jumps back and continues walking, ignoring the three people walking behind him that just witnessed this absurd situation. Sharkbite!
by nattiesays September 13, 2010
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a girl whose vagina has been used so many times it looks like a shark bit it
pam is such a slut look at her sharkbite
by fatawesome October 10, 2007
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Being bitten during a blowjob
Louisa gave jonny a sharkbite, he couldn't have sex for weeks.
by scorpio7500 September 9, 2008
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When you're fingering a chick's vagina with 2 fingers you stick your thumb up her ass thereby forming a shark's mouth with your thumb and two fingers.
Ginnie was gettin' off by her man fingering her and suddenly she felt a thumb slide up into her ass giving her a sharkbite.
by TomCat70 October 31, 2009
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To grab someone's side with your hands via swiftly bring the hands together, making it seem like your flanges are shark jaws "biting" the victim. I do this to get all my friends.

A second version of this is called the shockbite, whereupon you shock the victim in the side with a hand held in the shocker position.
1) *people having a good time*
*sharkbiter walks in*
Sharkbiter: "Hey...SHARKBITE!"
*Sharkbiter grabs side of nearest girl*
Everyone else: WTF mate?

2) *everyone having a good time*
Shockbiter: "Hey Colleen."
Colleen: "Yeah?"
Shockbiter: "SHOCKBITE!"
*shockbite*
by Sharkbite June 3, 2005
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