Answer:
It doesn't live within a house, nor does it live without. Most will use it when they come in, and again when they go out.
A house full, a yard full, a chimney full, no one can get a spoonful.
Something wholly unreal, yet seems real to I. Think my friend, tell me where does it lie?
One by one we fall from heaven down into the depths of past, And our world is ever upturned so that yet some time we’ll last.
Lovely and round, I shine with pale light, grown in the darkness, a lady's delight.
Strip the skin under my skin, and my flesh you'll reveal. It tastes sweet and tart, now throw out the peel. What is it?