Answer:
When one does not know what it is, then it is somethingอพ but when one knows what it is, then it is nothing.
What is born long, dies short, and spends its life leaving a trail?
It is a place of play on a sunny day. Winter will come and take all the fun, but we'll be back in May. What is it?
What dresses for summer and sheds in the winter?
What has to be broken before you can use it?
Iโm grown from darkness but shine with a pale light. Very round I am and always a lady's delight.