Answer:
What flies around all day but never goes anywhere?
What is it that no man ever yet did see, which never was, but always is to be?
You use a knife to slice my head. And weep beside me when I am dead.
I can be moved. I can be rolled. But nothing will I hold. I'm red and I'm blue, and I can be other colors too. Having no head, though similar in shape. I have no eyes - yet move all over the place.
What gets closer when you blink?
Often cooked as fillet, this meat comes from an animal that swims underwater.