I got a pop-up today on Facebook from a guy I follow, someone had posted on his page that a couple of weeks ago he had used the term Rule of Thumb and this person was posting to complain that he was using a term that meant a man could hit his wife with a rod no thicker than his wife, in the past.

He promptly pointed out this was false and had been debunked many times, but my god the number of people that tried to claim she was right. None could provide a single piece of evidence that it was true other than "I read it on the internet"