Thank you.
I'm very educated and a world traveller but have never heard of this procedure. It is ignorance on my part but does not make anyone an idiot.
It is the bad manners and the immediate rough discourse that I found troubling with TexasGreg's comment, frankly, very unTexan like.
That you have never been exposed to to the sort of ritual that is none-too-widely practiced does not make someone ignorant.