Answer:
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.
As a state in America I am round on both sides and high in the middle.
I am in the past never in the future. I don't exist but have existed. I saw what you saw and that is what I will ever see.
I turn around once. What is out will not get in. I turn around again. What is in will not get out.
I make a loud sound when I'm changing. When I do change I get bigger but weigh less. What am I?
When is it bad luck to see a black cat?