I am a little bit of water flowing through the mountains
You can usually count on me, but sometimes I surprise you.
My partner, the leash, help you take your dog for walks.
I'm almost as fast as Superman.
I help you hang on to things.
You should do this when you throw a "Hail Mary."
I often start with "If I were you."
When I do this, I make people shake, scream and hide.
You don't hurl when you do this.
Please don't hurt others!