A school of philosophy that celebrates putting primal needs and desires before anything else. A primalist individual will eat when they are hungry, sleep when they are tired, and do what they please when they please to. This may also be considered "doing what you want and not giving a fuck," a la Don Draper (see: Don Draper). However, a primalist may also find satisfaction in what may be more traditionally considered "primal": living outdoors, raw foods or vegan, primalsexuality, etc. Primalism, at its core, is about bringing humanity back to paleolithic or even pre-paleolithic cultural standards and lifestyle.
John follows the philosophy of primalism pretty close. I caught him taking a leak outside behind the shed with a fresh rolled stogie in one hand and a cold beer in the other, wearing nothing but his ripped boxers and those sunglasses he found at the Best Buy.