I,m a middle aged man currently going through his 3rd childhood, (third times the charm) and loving almost every minute of it. I discovered one of the secrets of life. If you plan on going through your childhood a second time, wait until you have young children of your own. It makes it funner for all, (well your spouse may think differently the first time you teach them about obnoxious bodily sounds).
I knew growing up would be difficult when I started a speech on my chosen career path with the words"When I grow up I want to be" This would seem normal for a younger child, but this was an impromptu speech in front of my fellow graduating seniors (True story).
There's an old proverb that goes like this, Be careful what you wish for, because you might get it.