Definition of a "Go Wild"

My maternal Grandfather had a term for when children would unleash extra energy in the creative ways that children do; he called it a "Go Wild."  If you have children, if you know someone with children, or if you have been around children when this event occurs then you know exactly what I'm talking about.  Grace had a Go Wild this past week while I was out hiking.  Fortunately Sarah captured about two minutes of it on tape.  For those of you who don't know what a Go Wild looks like - this is a text book example...