Answer:
I go through a door but never go in, and never come out. What am I?
I am perfect with a head perfect without a head; Perfect with a tail perfect without a tail; Perfect with either neither or both.
found at the back of the book.
the only amusing part of the body
Travel a mile and I will change, travel a million and I will end as I started. What am I?
Give it food and it will live, give it water and it will die.