Answer:
Metal or bone I may be, many teeth I have and always bared. Yet my bite harms no one. And ladies delight in my touch.
The more of it there is, the less you see.
It is a sound of empty, speak and it'll talk back plenty. But all the more you yack, you'll get the same words back.
You can read it both ways, I wearΝΎ One way it's a number, reversed a snare.
The barber of New York shave all men in New York. No man living in New York is allowed to shave himself. The barber of Nee York lives in New York. Who shaves the barber ?
I go in hard, come out soft. Blow me hard and I'll make a pop. What am I?