Smug cunt

An unlikeable, overly confident person. A smug cunt usually displays a false or unfounded belief in his or her superiority in intellect, character, moral reasoning, or other virtues. See Jennifer Rubin for an example.

Ricky:"I hear Jennifer Rubin used to be conservative but the alt right politics drove her away from the platform."
Tom:" Really? That smug cunt actually thinks that lie works? She has a history of leftists viewpoints that show she is inconsistent at best and a manipulative liar who lives in deceit at worst."