CAPTAIN UNDERPANTS
Dav Pilkey
In this book, Captain Underpants has to defeat Professor Poopypants. Poopypants made the Gerbil Jogger 2000 then grows it. Then, Captain Underpants comes to save the day. Captain Underpants starts beating up Poopypants. After Captain Underpants defeats Poopypants, Poopypants goes to prison.