Really, there comes a point when you should hang up your culture war boxing gloves and step away from the limelight. If you’re using the word “slatternly” in a conversational, completely non-ironic context you’ve probably passed it by.
In other words: *boo/hiss* to Mr. Robertson, but a big *here, here!* to Mr. Colbert.
(ETA: Heard through Tony Jones over at Theoblogy.)