Answer:
You buy me to eat, but never eat me. What am I?
In Paris but not in France the thinnest of its siblings.
I am heavy forward, but backward I'm not. What am I?
I go up and never come down no matter how hard you wish. As I get higher, more wrinkles crawl on to the face. What am I?
I am an instrument you can hear but cannot touch or see. What am I?
What never gets any wetter no matter how hard it rains?