I’m not usually one for memes, but I’ll make an exception for this one. I saw it on Jo Walton’s Live Journal.
Tell me about a story I haven’t written, and I’ll give you one sentence from that story.
ETA: The meme is any kind of crazy idea, not a specific story (this is meant as for fun). Although a few people know some history of things that actually have not yet been written. 🙂