Lying Weasel

Fred Thompson is the first political person I've heard tell it like it is about Connecticut Attorney General Richard Blumenthal's Vietnam service lies, and his subsequent lies about the lies.

Paul Begala tries to spin for Blumenthal. "Lot's of times, he tells the truth." Then he gives up, realizing how hopeless it is to be defending the lying weasel.
Being a part time truth teller makes Blumenthal a part-time liar, which, sadly, would make him more honest than the average politician if he was just telling average lies.