Flip-O-Rama

Flip-O-Rama is a method of animation used in every  Captain Underpants novel, its spinoffs, and Ricky Ricotta and His Mighty Robot.

How it works
Step 1: Place your left hand on the dotted lines where it says "left hand here". Hold the book flat.

Step 2: Grasp the right hand page with your right thumb and index finger.

Step 3: Now quickly flip the right hand page back and forth until the pictures appear to be animated. For extra fun, don't forget to add your own sound effects.

Trivia

 * In Captain Underpants and the Big, Bad Battle of the Bionic Booger Boy - Part 2: The Revenge of the Ridiculous Robo-Boogers, instead of saying "Don't forget to add your own sound effects!" on the left page, it says "For extra fun, try humming a stupid song and flip to the beat!".
 * In the audiobooks, it is called Sound-O-Rama.
 * The Flip-O-Rama chapters are also known as "The Extremely Graphic Violence Chapter".
 * The original Flip-O-Rama only appears in the first episode of The Epic Tales of Captain Underpants; it was replaced by other O-Ramas in the following episodes.
 * However, in The Hazardous Hysteria of the Hangry Hypnosinger, Burger-Flip-O-Rama shows something being flipped, only it's burgers instead of pages.