A woman walks into a restaurant and asks the manager for a glass of water. The manager aims a gun at her, the woman was pleased, said thank you and left. Why?
The woman had hiccups and the manager gave her a shock to scare away her hiccups!
It's so strong, it does not break,
It's so powerful, it penetrates a lake,
Sometimes it's weak as a twig left out in the sun,
It's so wonderful it gives us the power to have fun.
What is it?