I don't like the idea of fibbing more than necessary. A simpler solution for Bookworm would be to say, "Pardon me, but I need to finish this book by tomorrow," without giving a reason. I think most people would accept that and let her read in peace. But if pressed, she could say, "I borrowed it and I need to return it."

Van W - you don't like fibbing but then you propose another fib? Why not just smile and say "excuse me, but I'd like to read my book." And then do it.

Re: Maggie Lawrence I was proposing a lesser fib! I agree it's better not to fib at all, but if someone is really being a nuisance, then a little white lie doesn't seem so bad. But starting out with something like, "Well, excuse me, but I'd like to get back to my book" is definitely best.