Honestly, it is just so immature to giggle at toilet humor. If you don’t watch out, the evil Professor Poopypants may just zap the laughter lobes of your brains. You’ll never snicker at his ...

In the fourth book of the series, "Captain Underpants and the Perilous Plot of Professor Poopypants," Pilkey provides a chart of silly syllables and semi-crass words that, when applied according ...