Answer:
What gets sharper the more you use it?
You throw away my outside, you cook my inside. Then you eat my outside and you throw away my inside. What am I?
Lovely and round, I shine with pale light. Grown in the darkness, a lady's delight. What am I?
I have a head and a tail but no body. What am I?
I dig out tiny caves and store gold and silver in them. I also build bridges of silver and make crowns of gold. Sooner or later everybody needs my help yet many people are afraid to let me help them.
The answer I give is yes, but what I mean is no. What was the question?