Answer:
My teeth are sharp my back is straight to cut things up it is my fate.
I am a portal to another world which you cannot enter. Only you can see me but I can't see you.
Though I am only two words I have thousands of letters in me
What gets wetter as it dries?
I am rarely touched but often held. If you are smart you'll use me well. What am I?
What language does a billboard speak?