Ditto transforms into a freakin' book.

Ditto turned into a book, he's telling you to READ

Ditto tries helping a trainer study by becoming a book. Despite the good intentions, the inside of ditto is completely blank.

Ash is trying to read a book but it seems its empty. Maybe its because that book is a Ditto!

Ditto has turned into a book so Ash can tear out a page for Pikachu to use as toilet paper. Pikachu looks really distressed.

ditto is a book!

Ditto transformed into a book.

Haha. The classic "Ditto, Transform into this" scene. Lol, that's not a dratini!

ditto transformed into an ekans