Answer:
I hide but my head is outside. What am I?
A dragon's tooth in a mortal's hand, I kill, I maim, I divide the land.
You write on me and secrets I can keep in places never seen. I spin like a top. Though stiff as a board, I'm often described like a mop. What am I?
I have feet on my head
I can be sweet or sour. I do not rhyme with any other word
A man goes out in heavy rain with nothing to protect him from it. His hair doesn't get wet. How does he do that?