Answer:
The more that there is of this, the less you see. What is it?
An archaeologist digs up two perfectly preserved bodies. He immediately identifies them as Adam and Eve. How can he tell they are Adam and Eve?
When is homework not homework?
When does 4 - 1 = 5 ?
A boy throws a baseball. It travels 40 feet and then goes right back to the boy. How is that possible?
I appear in the morning. But am always there. You can never see me. Though I am everywhere. By night I am gone, though I sometimes never was. Nothing can defeat me. But I am easily gone.