Answer:
I cannot be burned in fire or drowned in water. What am I?
I make things short but I am pretty long myself
The person who makes me doesn't need me. The person who buys me doesn't use me. The person who uses me doesn't know it. What am I?
What gets whiter the dirtier it gets?
Used left or right I get to travel over cobblestone or gravel. Used up I vie for sweet success used down I cause men great duress.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.