Captain Underpants and the Revolting Revenge of the Radioactive Robo-Boxers (Captain Underpants #10)
This post contains affiliate links. As an Amazon Associate I earn from qualifying purchases A world without UNDERPANTS?!!! When we last saw our heroes, George and Harold, they had been turned into evil zombie nerds doomed to roam a devastated, postapocalyptic planet for all eternity. But why, you might ask, didn’t the amazing Captain Underpants