Term used for a group of three people jerking off in triangular fashion because they don't have enough people to make a circle. Common among mathematically-savvy academics.
Alan: what kind of triangle jerk should we try this time?
Bryce: let's try the isosceles.
by abbadabba22 February 10, 2010
The most popular triangle related subreddit. A place for geniuses to congregate and discuss triangles.
Obama: How did you cure cancer?
Trianglejerker: Oh, i just copied the cure from trianglejerk.
by YourStepMother September 04, 2011

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