I'm not sure who coined the phrase "let it all hang out," but I may understand the inspiration behind it now.
My family and I were enjoying a lovely evening out at Swift-Cantrell Park yesterday with some friends. Our collective children were running amok in the playground area, and my wife and I were talking with some friends at the picnic area. Periodically (as any parent is prone to do), I would glance over to the playground to check on the kids and make sure one of them had not been impaled or dismembered.
On one such glance-over, I was met with something I could not have fathomed. When what to my wondering eyes would appear, but a 5-year old boy standing on the top level of the playground structure with his pants down to his ankles, relieving himself on the barky ground 10-feet below. He literally was letting it all hang out! And, it was quite a windy day, so this was not pleasant for anyone!
My friends and I start yelling at the little boy - who is absolutely oblivious to us, and quite content in what he is doing. Further, I don't think he understood English...but it seems to me that public playground peeing should not be acceptable in any culture.
When he was finished, he simply hiked up his drawers, slid down the slide, and went on his merry way. No big deal. Like it's an everyday occurrence.
When you gotta go, you gotta go.