It's always fun to know the details of religion.
My ex is Polish and when Pope John Paul II died, I pointed out that the Catholic ritual (I'm not Catholic) is that (and the phrasing is important here) "When the Pope dies, the senior Cardinal hits him on the head with a silver hammer to make sure he is dead". The family argued that there

is no way the church would do something so barbaric. Then one of them looked it up on the internet. And of course, technically, I was correct, although perhaps I could have phrased it better.