Say what? Books you can eat? On April the first? Well, it may sound like a joke, but silly edible sendups of famous books are totally serious business – and they're the order of the day at the Edible Book Festival. Each food-based incarnation of literary homage might resemble a book, or function like a book with edible pages, or not. But these clever and nommable creations will be on display at the Austin Book Arts Center, which has adopted the annual tradition that began at UT back in 2003.