Santa's Secret

Listen up, buttercup. Santa's got a list, and he's checkin' it twice, right? But the joke is that he's not just checkin' who's been good or bad, he knows exactly where the "naughty girls" are. It's a play on words, implying Santa's cheerfulness comes from knowing the whereabouts of girls who might be a little frisky. Bet you didn't get that, did you?