Answer:
If you drop me, I'm sure to crack. Give me a smile and I'll always smile back. What am I?
The more you have of it the less you see. What is it?
I am three simple words everyone wants to hear. Three simple words such simple words and yet...life changing...
What gets whiter the dirtier it gets?
What gets sharper the more you use it?
I'm the source of all emotion but I'm caged in a white prison.