Would it seem ungrateful of Wally to point out the Mandible sisters' extra arms? Or to question their all-chocolate, all-the-time menu? Or, um, to venture into the cellar, where the twins have been told to NEVER, EVER, EVER go?
Yeah, perhaps that last bit was a mistake. Now there's nothing left for the Shluffmuffins to do but run--run for their lives!
DAN GREENBURG is the creator of the enormously popular Zack Files series of middle grade novels as well as the author of a number of bestselling adult books, the best-known of which is How to Be a Jewish Mother. He lives in New York.