Answer:
Come up and let us go. Go down and here we stay.
Inside a great blue castle lives a shy young maid. She blushes in the morning and comes not out at night.
Two brothers we are, great burdens we bear. All day we are bitterly pressed. Yet this I will say, we are full all the day, and empty when go to rest.
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
I pass before the sun, but make no shadow.
If lightning strikes an orchestra who is the one most likely to get hit?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?