Answer:
I am lighter than the material I am made of. You see parts of me but more of me is hidden underneath.
You throw me out when you want to use me, but take me in when you donβt want to use me. What am I?
I am an odd number that become even when beheaded.
I have thirteen hearts but no body or soul.
I can speak with my hard metal tongue. But I cannot breathe, for I have no lung. What am I?
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.