The act of constantly sharing the same opinion in a forum full of people who are obviously known to have the same opinion as yours, therefor granting you free upvotes to said opinion, while gathering downvotes to anyone that opposes you on the matter
Good examples:
The atheist section of Reddit
League of Legends' Boards

Any sort of 9Gag picture that goes against consoles/Frozen/Christianity

Nearly any website that governs itself through up and downvotes, and inevitably estabilishes "approved" opinions, which leads to the formation of a circle jerk
by Carlão the Pimpslayer September 19, 2015
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1.) When a group of males sit in a circle, jerking each other off.

2.) *NOT* when a group of males stand in a circle to jerk off onto a cookie or anything of the sort. That retarded frat game is called "Limp Biscuit"... which kind of indirectly explains why the band of the same namesake is so fucking horrible.

3.) When a bunch of blowhards - usually politicians - get together for a debate but usually end up agreeing with each other's viewpoints to the point of redundancy, stroking each other's egos as if they were extensions of their genitals (ergo, the mastubatory insinuation). Basically, it's what happens when the choir preaches to itself.

4.) A game on MXC that's based on sumo wrestling. Beware the Green Teabagger.
by Ninja Disaster July 08, 2004
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1) Group masturbation, usually males, sitting or standing in a circle jerking themselves or each other off.

2) A fraternity initiation ritual or hazing whereby the lights are turned off. The plege or pledges are told it's a circle jerk. The actives pound their fists together in the darkness simulating the sound of jerking off. The lights are then turned on suddenly and the pledge or pledges are the only ones in the circle with their dicks out.

3) A useless discussion or meeting involving mental masturbation whereby the egotistical, boring participants try to demonstrate they're the smartest persons in the room.
The pledges learned humility from the initiation circle jerk.
by Pool May 24, 2006
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a lot of work without accomplishing anything
Joe - How'd work go today?
Bob - It was like a 5 man circle jerk.
Joe - That bad huh?
by Keyzer Korleone August 07, 2009
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A masturbation party; can be with guys or girls. Everyone usually sits in a circle and jacks off in the company of other people.
I am planning a circle jerk next week if any of y'all are interested.
by RedHotGirl June 20, 2003
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A group of men who stand in a circle and use the right hand to masturbate for the man behind him. Usually a big hit at parties! Its all usally for a good cause.
by circajerkgalore April 29, 2010
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