Cass is affecting different accents these days.
Today he's Fast Draw McBoy, pretending to wear a side-arm, boots and a (what must be a) ten-gallon hat, riding the range, catching those mangy cows that try to out-run his branding iron.
And he does all this with a stomp of his boots and a hearty yell of:
I said, unwisely,'hon, I think you're thinking of 'Tarnation' and was roundly scoffed at: Why on earth would cowboys be talking about tar??
get along, little dogie!!