Answer:
I am what no man ever yet did see, which never was, but always is to be. What am I?
The shorter I am the bigger I am.
I am what one cannot keep, two cannot hold, and three cannot destroy. What am I?
What is the difference between a poorly dressed man on a bike, and a well-dressed man on a unicycle?
I am an odd number that become even when beheaded.
Give it food and it will live, give it water and it will die.