p-book
A giant slab of paper that takes up your whole backpack. It has words inside, but they're all about the same thing. You can't fit more than one story in it, or else it'll break your spine.
I tried to put two stories in my p-book. Now my spine hurts and I can't sit down.
My p-book is so big, I have to carry it like a baby.
I read my p-book in the shower. The water made the ink run and now my hands are stained.