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The Captain Underpants Extra-Crunchy Book o' Fun is an activity book based on a series of children's books by Dav Pilkey with Captain Underpants in the titles. It was released after Captain Underpants

The Captain Underpants Extra-Crunchy Book O Fun

and the Perilous Plot of Professor Poopypants and before Captain Underpants and the Wrath of the Wicked Wedgie Woman. This book features a Captain Underpants comic (Hairy Potty and the Underwear of Justice), a mini-test, jokes, crossword puzzles, Flip-O-Rama tips, comic-making tips, word searches, mazes, and more.

Comics

  • George and Harold's College O' Art
  • Prank Time
  • George and Harold's College O' Art 2
  • Hairy Potty and the Underwear of Justice

Trivia

  • This book had a sequel entitled The All-New Captain Underpants Extra-Crunchy Book o' Fun 2.
  • "Hairy Potty" is a parody of Harry Potter.
  • Dav Pilkey explained that the reason he made this book is that he only had enough energy to make an activity book. This was after Captain Underpants and the Perilous Plot of Professor Poopypants. This book (along with its sequel) is not in the series itself.
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