It's Gunter's Glorious Day of Discord
The notoriously evil penguin Gunter has created a potion that turns even the most innocent Candy Person into a wily prankster. Now mayhem is erupting all over Ooo, and nobody can stop it This full-color interactive journal is full of fun, harmless pranks to play after school, on vacation, at home, or whenever Gunter's mischievous muse strikes."
Gunter's Glorious Prank Journal
Penguin Young Readers Group