It's a Book...by Lane Smith, Macmillan Children's. The author writes about it here:
Unlike Grandpa (me), today's kids are whip smart and tech savvy. I know eventually everything will be digital and kids won't even know from a regular old book book and that's fine. Truthfully? The reason I made the book? Certainly not to "throw down the gauntlet" as one critic has stated. Naw, I just thought digital vs. traditional made for a funny premise. No heavy message, I'm only in it for the laffs.