whoever named them "private parts" was full of smarts. By
   contrast, your nose is public parts. Your dangle is a private
   part. Trees privatize parts so long as you look to your left and
   right first. Then it's usually safe enough. Unless you're in a
   public space. Then put your hands behind your back and wait.
   It's exposure that isn't decent. [say "isn't decent" out loud]