Answer:
What never ends but you always have it
What's at the head of an elephant and at the tail of a squirrel?
He is known to commit a friendly home invasion one night a year, never taking but always leaving stuff behind
David's father has three sons: Snap, Crackle and?
They're big and blue, and larger than seas
Iām grown from darkness but shine with a pale light. Very round I am and always a lady's delight.