"I don't understand that reference, but I can wait until Christmas. It doesn't have to do with the celebration of the birth of Christ, does it? Because he wasn't born on December 25th..." Castiel began, almost launching into the need to explain how he was actually born in the spring and how the celebration of Christmas was meant to replace a Pagan celebration but that quickly died on his tongue. Meg likely knew all of this. Telling her this wouldn't be imparting any wisdom like it would have, had he been telling the Winchesters. But, he still didn't think about her various nicknames for him and how they reminded him of how he was no longer an angel of the Lord and what all that meant to him.
"So we are watching Casablanca," he said when the title card flashed along the screen, telling him what movie they were watching. He debated a moment, when Meg sat on the couch because he wasn't sure of how close to get to her or not. When they were once like this, during the constant swap of her power going between them, her head had landed on his shoulder and settled in, getting comfortable. It was enough to make him move in closer, but not too close. If the same occurred this time, he wouldn't be put off by it and would instead look at it fondly, like he did carrying her to his bedroom and watching over her sleeping form but nights prior.