The moral of this surreal episode would run something like this: never patronize a fast-food restaurant built where giant mutant bugs can crawl into the meat grinder. Young Roscoe learns this disgusting lesson almost too late when, after six months of nightly Gussy’s “Jungle Drum” burgers, he suddenly discovers that he’s beginning to resemble a praying mantis. Luckily, and despite the best efforts of Gussy’s CEO and cohorts to hush the whole thing up, Roscoe’s genius best friend Kinshasa Rosa Parks Boomer winkles out the cause. Also luckily, once Roscoe modifies his diet, the changes reverse. Elliott (Cool Crazy Crickets, 2000, etc.) is far from the first to take on a “boy-into-bug” premise, and though he introduces a memorably quirky cast, he doesn’t give it much to do besides solve the mystery of why this is happening to Roscoe and others. The high gross-out factor will draw some readers, but they’ll only find characters in search of a story. (Fiction. 10-12)