Answer:
You can read me both ways I wear; One way it's a number reversed a snare.
What gets sharper the more you use it?
I am the same written forward backward and upside down.
cloud is my mother wind is my father.
Tear me off and scratch my head, what once was red is black instead. What am I?
Be sure to shout for its answers are weak, but there is no language it cannot speak.