Answer:
You use me between your head and your toes the more I work the thinner I grow.
I can be written, I can be spoken, I can be exposed, I can be broken. What am I?
I eat I live.I breathe I live. I drink I die.
Lovely and round I shine with pale light grown in the darkness a lady's delight.
I can sizzle like bacon. I am made from an egg. I have plenty of backbone but lack a good leg. I peel layers like onions but still remain whole. I can be long like a flagpole yet fit in a hole.
What made Cyclops quit teaching?