1. An insult usually exercised by kids under the age of 8. Anyone who uses it over the age of 10 is probably socially awkward

2. to move suddenly, usually happens when you see something nasty or odd.

3. To masturbate or rub your penis in a rough, but pleasurable seductive fashion. The opposite sex can take part in it too making it feel 10 times better. Usually used in the context: jerk off.
1. "You're such a jerk Watson!"

2. He jerked back when he saw a picture of a vagina that was herpes-encrusted

3. His lady friend jerked him off real hard in his apartment, he moaned with pleasure as she caught his cum in her mouth.
by Double D1021 August 28, 2014

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Another definition for the word that people use for mean idiots.

Verb - To perform the dance style known as jerking, which involves such moves as the Stanky Leg, the Dip, and the Reject. This trend grew due to songs such as 'Teach Me How To Jerk' by The Pu$h and 'Your a Jerk' by New Boys.

Noun - One who performs this dance. Jerks typically have a high degree of swagger in their demeanor.
1) "Yo, can you teach me how to jerk?"

2) "Hey, check that kid's fresh Reject."
"Yeah, what a jerk."
by Mr. Misnomer May 07, 2009

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J.E.R.K stands for Jr. educated rich kid
non-J.E.R.K: i wish i was a J.E.R.K
by theman102 May 27, 2012

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foolish person.
sammy is such a JERK all he does is make fun of people.
by loyality July 31, 2009

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Having a best friend and all they do is continually complain about you.
My best friend Britney Dee was being a jerk to me the other day.
by ADawg June 10, 2012

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second derivative of velocity or derivative of acceleration.
1 find the jerk given an equation for velocity

2 A: Dude your a second derivative of velocity

B: Thanks I guess
Calculus students: *Laughing*
by cyberbullying December 01, 2011

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A new, upcoming, popular dance; mainly in Southern California.

Dance can be described as a repetitive and fast-moving.
Hey! Do you guys wanna jerk?!

This is a good jerking song!
by Kristine<3JustinBieber February 01, 2011

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