Rose walked into the console room, where she found a giant Christmas tree.
"What on earth is this for?"
The Doctor's head popped up from behind the tree.
"It's Christmas!"
"How can you tell?"
"Well, with a bit of poking about, I can take you to anywhere on Earth the minute it hits Christmas day."
"Really? Cool!"
"So, where do you want to go?"
Rose thought for a minute and said, "New York."
"Just New York, not New New York?" the Doctor said teasingly.
"Yes, just the normal New York! I've always wanted to go to New York while it's snowing."
"Well, 2063 is a good year for snow in America…" the Doctor said thoughtfully.
"Great! Let's get going then!"
The Doctor leaped up to the controls and ran around, hitting all the right buttons. The TARDIS sprang to life and when it finally stopped, Rose made for the door.
"Whoa! Where do you think you're going? It's cold out there, go get a coat or something." The Doctor ordered her.
Five minutes later, Rose came back with a fluffy pink coat and gloves.
"Aren't you gonna change?" Rose asked.
"Nah, I'll manage."
The Doctor reached for the door handle when he suddenly stopped.
"What is it?"
The Doctor pointed up. Hung from the door frame was a bunch of mistletoe.
Rose looked at the Doctor.
"It wasn't me!" the Doctor said protectively. "Must have been the TARDIS being 'funny'."
Rose just tilted her head to one side, not saying anything, just looking hopeful. The Doctor narrowed his eyes slightly, starting to understand.
"You know the rules." Rose said, trying not to smile. "You have to kiss under the mistletoe."
The Doctor half-smiled, and slowly leaned down towards Rose. Their lips made contact at last.
Rose lifted her gloved hands to the Doctor's neck while the Doctor wrapped his arms around her waist, pulling her closer.
All too soon, it ended, both gasping for breath.
The Doctor grinned down to Rose and she couldn't help grinning back.
"Come on then! We want to get out there before all the snow melts!" the Doctor exclaimed excitedly, pulling Rose out the door by her waist, which he still had a firm grip on.
Rose just had enough time to murmur thank you before the Doctor closed the TARDIS door.