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 has a spine, tail, and leash but isn't a dog?
They say each one is totally unique
He prefers to travel on vines and pal around with gorillas.
Dragons are known to do this to their gold.
Iโm grown from darkness but shine with a pale light. Very round I am and always a lady's delight.