Someone who accelerates when entering a traffic circle to cut off other drivers travelling at normal speeds.
As grandma rolled into the roundabout, she had to slam the brakes to avoid hitting a circle jerk in a yellow BMW.
by Eric Maan September 03, 2009
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Someone who is being a genuine douchebag on Google+. They can either be making a bunch of really stupid updates, making rude comments on your posts, or +1ing updates about your grandmother dying.
Person 1: Dude, can you believe what Mark posted on Google+ last night?
Person 2: Nah dude, he was being such a Circle Jerk.

Person 1: I posted, "RIP Love you grandma," on my Google+ last night and Mark +1'd it.
Person 2: He thinks he's so funny, but really he's just a Circle Jerk.
by sillyrob July 11, 2011
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When guys stand in a circle and jerk off, preferably onto a willing woman participant.
The guys at the frat party did a circle jerk initiation.
by RiCK_420 December 20, 2009
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1. A term often used to refer to when a group of people attempt to debate a topic, but it is taken over by people who all agree with eachother trying to boost their egos.

2. When a group of men jerk eachother off.
This thread has become a useless circle jerk. GG.
by SilverishGoldNova January 25, 2018
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A circle jerk is the abrupt, jerking stop after pulling the handbrake while doing doughnuts in a car.
by moonlight rose May 11, 2015
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When Males sit in a circle and jack off and they all ejaculate on a piece of bread in the middle and last one to ejaculate has to eat the bread.
Brett lost the circle jerk on purpose to eat the bread.
by Tyler Spillane May 02, 2005
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