Top Definition
The belief that working in a group provides the security and ups the creativity many folds, as compared to doing it solo.
Although embracing the gang mentality makes one vulnerable to other members, however, it develops strong camaraderie and a healthy sense of competition in the long run.
via giphy
by MathPlus January 19, 2017

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When you are an original gangster (OG) and you get together to gang up on an outsider together with the sole purpose of defending the gang no matter what.
Anna and Tracey are showing their gang mentality telling Brant he is not an OG.
by OriginalG January 30, 2016

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