Answer:
What can be forever wound up but never annoyed?
I have rivers without water. Forests without trees. Mountains without rocks. Towns without houses.
There are two meanings to me. With one I may need to be broken, with the other I hold on. My favorite characteristic is my charming dimple.
It can cause deflation of tires when dropped from the rear of spy cars.
I am the fountain from which no one can drink. For many I am considered a necessary link. Like gold to all I am sought for, but my continued death brings wealth for all to want more.
What never gets any wetter no matter how hard it rains?