Answer:
Crooked as a rainbow and slick as a plate ten thousand horses can't pull me straight.
I can only be played on a windy day
I am commonly abbreviated to H
I'm not a bird, but I can fly through the sky. I'm not a river, but I'm full of water. What am I?
I am the place where yesterday is always before today. What am I?
Pirates put their booty in it.