Make up a title for a story I didn't write, and I will respond with details of those non-written stories. You may if you like include details, such as pairings or fandom or whatnot.
For her eighth birthday, the Doctor decides to get little Reinette a puppy, whom she names "Alfredo". Unfortunately, Alfredo is actually an alien disguised as a puppy. Throughout the course of a week, Alfredo and little Reinette get themselves into a variety of trouble before the Doctor figures out what's going on. In the end, they decide to keep the puppy, but then its family shows up and steals him away. Reinette is sad, and so is Ten but he's too repressed to admit it.
From:
Alfredo