Answer:
When one does not know what it is, then it is somethingอพ but when one knows what it is, then it is nothing.
He is known to commit a friendly home invasion one night a year, never taking but always leaving stuff behind
What kind of storm is always in a rush?
What has a foot but no legs?
Never swallowed but certainly chewed, tossed in the mouth but it is not food. What is it?
Iโm grown from darkness but shine with a pale light. Very round I am and always a lady's delight.