"You make it sound like you ruin every Christmas ever, Doc," Seriously, at least a good percentage of the Christmases they spend together are perfect.

When he hears about the snowman, his face does light up a little bit. After all, he's seen more snow here than he had in his entire life and it would be great to actually do the stuff that he sees in shows during the winter. Then he remembers the blizzard again.

"That sounds great Doc, but, ah," he turns to look worriedly at the window "You think we should make sure we're not snowed in first?"

Granted he doesn't know how often that happens outside of movies and TV, but it can't hurt to be a little worried, right?