Answer:
Goes over all the hills and hollows, Bites hard, but never swallows.
Tear one off and scratch my head what was red is black instead. What is it?
I am gentle enough to soothe your skin, light enough to fly in the sky, strong enough to crack rocks. What am I?
I can be written, I can be spoken, I can be exposed, I can be broken. What am I?
Who plays when he works and works when he plays?
I flow from the Homerβs mouth when he sees doughnuts.