Hedonism (hēd'n-ĭz'əm) n.
The Religion that identifies one's self as "God" and has sacraments that honor the pursuit of or devotion to pleasure, especially to the pleasures of the senses. The pure or ultimate religious expression would be full exaltation of self, believing that societal rules, norms, virtues, or values are not applicable to one's self.
The Philosophy that believes that only what is pleasant or has pleasant consequences is intrinsically good. The ultimate objective would be to experience pure intoxicating pleasure.
The Psychology that holds that behavior is motivated by the desire for pleasure and the avoidance of accountability to anyone or anything else.