Top definition
The religious practice of following the diety #BaseddGod, sometimes even to an extreme.
Anthony: Hey, John, what's your religion?
John: Basism
Anthony: Wtf is that?
John: ?!?!?!?!?! omgwtf, it's where you let #baseddgod fuck your bitch. He has swag to the maximum, swag on a hundred thousand, hundred trillion, OH god damn #baseddgod...
by MaryCherryPoppins February 09, 2012
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2
The art of being basic
Leaon: Normality is a form of basism

Derek: is that why you're so weird?
Leaon: exactly
by Applejaxandredbull August 19, 2016
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