Until I read all the way down here to the bottom of the comment thread, I was thinking about the older people who didn't get this reference since I've been hear

Until I read all the way down here to the bottom of the comment thread, I was thinking about the older people who didn't get this reference since I've been hearing it for decades. But now I see, thanks to your comment, that it is I that is the old one, and it's the youngsters that don't know it.