The Doctor snatched the fabric from her hands and growled. “Pulled a muscle in my back. Don't ask.”
At that precise moment Clara came skipping down the stairs and seconds later she peeked through the crack in the door, a broad smile on her face.
“Oh, hi Amy, I thought I heard voices,” Clara greeted her happily.
“Hey new flatmate,” Amy waved back at her.
“One last box of clothes and then I'm all done. The rest are books,” she explained with a smile.
“Oh, Rory can take care of those,” Amy replied, “He should get home any minute.”
The Doctor was about to open his mouth and say something but thought better of it. Rory working overtime had been a fib he had come up with, though what exactly his reasons had been the Doctor couldn't tell. Maybe he had wanted to spend some time alone with Clara. Maybe he had been trying to impress her. Maybe he had just wanted to be a helpful new flatmate by showing up early. Anyway, his lies would soon came crumbling down if he started arguing about it.
“I thought you said he was working overtime today?” Clara asked, raising her eyebrows at the Doctor but before he or Amy could say another thing, she shrugged and headed back outside to get the last box of clothing.
The Doctor was ready to take a long breath of relief when Amy turned back around to face him, eyeing him more suspiciously than before.
“How exactly did you pull your muscle?” she asked him warily.
He growled in reply. “Stupidity.”
Amy crossed her arms in front of her chest and chuckled, her eyes never leaving him. “If you want to I could try to find out if she likes you, too.”
“You will do no such thing,” the Doctor warned her, raising his index finger, “Clara is a sweet girl. She surely doesn't want someone like me to mess her up.”
Amy gave a slight shrug before she headed in the direction of the kitchen. “Suit yourself.”
Right before she left the room the Doctor thought he could hear her giggle. That surely wouldn't be the last time Amy teased him about Clara and he was already dreading what was to come.