Metaphors

My head is a book Waiting to be read If you would ever shut up You'd have heard what I said My head is a stomach Waiting to be fed I'm hungry for some answers Knowledge is bread My head is a maze And I have lost my way Instead of using logic I try to climb the walls all day My head is a song With a beat that doesn't stay The melodies are thick And the harmonies are gray My head is a vault It keeps my thoughts locked tight And all my rhyming metaphors Are safe and out of sight