Have you ever wanted to read about a book that doesn't exist? Or maybe you just think book descriptions are too logical.
Here's a tool perfectly suited to your eccentricity! Just pick a genre and you'll receive a probably-but-not-guaranteed-to-be unique book blurb, built on descriptions of real, live, actual books. If you're feeling particularly ambitious, for extra credit you can go ahead and write the book you get a blurb for.