Answer:
I am always hungry, I must always be fed. The finger I lick will soon turn red.
I'm sometimes white and always wrong. I can break a heart and hurt the strong. I can build love or tear it down. I can make a smile or bring a frown.
What is that over the head and under the hat?
What lies in a tunnel of darkness. That can only attack when pulled back?
What surrounds the world, yet dwells within a thimble?
Which popular cheese is made backwards?