Mucumber McGee and the Lunch Lady's Liver

In a dismal old schoolhouse down by the sea, there was a young boy named Mucumber McGee. Lunch had begun, and was nearly complete. Would there be any food for Mucumber to eat? Alas, not a hot dog, not even beef stew, only a plate full of brown, lumpy goo ... Originally published by HarperCollins in 2008, The Lunch Lady's Liver is the second book in the Mucumber McGee series.