Answer:
It is weightless, you can see it. If you put it in a barrel it will make it lighter?
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.
Although my cow is dead, I still beat herΒ What a racket she makes.
What can be swallowed, But can also swallow you?
What has one eye but cannot see?
I can only be played on a windy day