1. A person whose long-reinforced sense of entitlement overwhelms and disables their ability to understand and/or adhere to reasonable social norms
2. A person who kills the fun.
Alternate definition and origin:
A chimpanzee raised in wealth and comfort and trained in the entertainment industry who is now retired and is unable to adapt to a chimpanzee's natural habitat in favor of a pampered human-like existence.
Person 1: I'm hungry.
Person 2: I can make you an omelet.
Person 1: You must assure me that they are farm fresh, locally raised cage-free organic eggs, and be sure to separate the whites from the yolk.
Person 2: Stop being such a diva chimp.