figurative. intransitive. To help or serve (oneself or others) at one's own discretion, to do at one's pleasure, indulge oneself.

To gratify a desire, appetite, etc.; to take one's pleasure; spec. to ‘partake’, i.e. (too) freely of intoxicants (colloquial).

an activity, period of time, etc., devoted entirely to indulging in one's own interests or in self-expression; also as v. intransitive, to indulge…

An instance of egotistical or arrogant behaviour; an act done in order to increase one’s sense of self-importance; = ego-trip n. at ego, n.…