Jimmy's elbow

"Jimmy is a very good boy. He even wears a tie! But when he bumps his elbow on a table, this very good boy starts feeling very bad. Did his elbow die? Was that just a dream? Or has Jimmy's magic elbow come to life and unlocked his superpowers? Well, no matter what, it's time for Jimmy and his elbow to go to school . . . What else could go wrong?"--Provided by publisher.