It's Not My Fault!

A boy steadfastly refuses to take responsibility for any of his mistakes. He just blames everything on his pen, his backpack, his comb, his pillow--whatever happens to be at hand. For a while, this approach works at home and at school. He's positively convinced he has it all figured out until...all the inanimate objects rise up and revolt. What can he do when a talking pen and talking backpack decide to rebel?