Hallways

My books are all over the floor, Even one went out the door! The kids don't see me when they run down the hall. People say I'm really quite small! Flinging, Back and forth, Didn't see me at all! Sent my books flying, I wouldn't be lying, This has happened before! Usually, I end up on the floor. What to do? I'm tired of going home, With a bruise or two! Stuck a tall bike flag on my pack! Let's see if the kids miss that!