So, this takes place right after "The Doctor, The Widow, and The Wardrobe", in which the Doctor arrives at Amy's doorstep for a Christmas dinner.

"Are you all settled in then?" Rory grumbled, a slight frown between his eyebrows, to which the Doctor, of course, paid no attention.

"Think so," the Doctor laughed, high-fiving Amy, who was putting the finishing touches on the place.

"Right then, son, you've got your own room now," Amy smiled, wrapping an arm around Rory's waist.

The Doctor looked around delightedly. He had specifically asked the Ponds to clear out their guest room so he could move in. Although Rory looked rather mystified when the Doctor rolled out the fold-up bed, he sat back and watched his wife move his son-in-law in.

The room, a soft tan color, now had a hammock, for some strange reason, dangling from the rafters, and a fluffy burgundy rug spread across the floor. The walls, bare for now, had the Doctor's promise to be covered with maps and diagrams. However, nothing else could be found in the sparsely used guest room except for a gleaming blue police box, that seemed to twinkle even brighter than normal under the golden light of the chandelier. One of its doors was slightly ajar, out of which popped a rather wide foot clothed in dark blue socks.

The Doctor popped out excitedly, a large smile wreathed across his face. "Oh, my old girl likes being indoors. All her wiring's gone screwy, of course, but it'll adjust. Consider it travel sickness."

"Well, aren't you going to take your things out then?" Amy beckoned. "Your sciencey-wiency tools and modules..." She fell silent at the look on the Doctor's face.

"Amy," he said gently, placing his hands on her shoulders, "you mustn't get comfortable with this idea of me moving in. The Doctor does not stay places, and you know that."

"I know," she complained, pulling the Doctor into a hug, "I know that more than you do. But stay - please? Consider it a holiday - for Christmas!"

The Doctor laughed quietly. "Do you think I get holidays, Amelia?"

She pulled away, smiling wryly.

Rory decided this would be a good moment to interject, "Oh, and did we mention, our daughter's promised to try and pop in for the holidays?"

The Doctor suddenly stiffened, hands flitting nervously to his bow tie. "Your - your daughter now?" He cleared his throat nervously.

Amy winked, then fell back, revolted. "Oh gods, I can't think about this. My daughter... and my best friend... Oh god..."

The Doctor chuckled. "Don't worry," he began, twirling about and kicking open the TARDIS doors, "we'll keep quiet about it. We're not exactly the average couple, are we?"