Answer:
I'm white, I'm round, but not always around. Sometimes you see me, sometimes you don't.
I never was, am always to be. No one ever saw me, nor ever will. And yet I am the confidence of all, To live and breath on this terrestrial ball.
Thousands lay up gold within this house. But no man made it. Spears past counting guard this house, but no man wards it.
What's a place you have left but didn't enter?
When the day after tomorrow is yesterday. Today will be as far from Wednesday. As today was from Wednesday. When the day before yesterday was tomorrow. What is the day after this day?
If I say "everything I tell you is a lie", am I telling you the truth or a lie?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?