Answer:
Held firmly in the hands, like a sword it cuts deep. Bloodless strokes, all, then forward we leap.
Who is that with a neck and no head, two arms and no hands? What is it?
Sometimes I am loud. And viewed with distaste. Poke out my 'eye', then I'm on the front of your face.
A hill full, a hole full, yet you cannot catch a bowl full.
Looks like water, but it's heat. Sits on sand, lays on concrete. A play on the eyes, but it's all lies.
You use it between your head and your toes, the more it works the thinner it grows.