Answer:
They can be long or short; they can be grown or bought; they can be painted or left bare; they can be round or square.
I'm a ring of sliced onion dipped in batter and then deep fried.
What should you do when you see a green man?
Makes arrows fly and kites soar!
How can a pants pocket be empty and still have something in it?
I'm the source of all emotion but I'm caged in a white prison.