Answer:
What is cut on a table but is never eaten?
I am a busy worker who is a water mammal.
What runs but never walks has a mouth but never talks has a head but never weeps has a bed but never sleeps?
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 am the ultimate killing machine used not once but TWICE I can be made by humans.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.