Answer:
I am one with eight to spare, lest I lose my one. I'm not a number. What am I?
I turn around once. What is out will not get in. I turn around again. What is in will not get out.
A move made popular by the King of Pop.
Take away my first letter take away my second letter take away all my letters and I would remain the same.
You cannot keep me until you have given me. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.