The other day Our Eldest asked me how one becomes Pope. Despite being hazed with Catholicism throughout my life, my Unitar-Qua-Presbyr-ism could not remember the whole process. So I did what comes naturally, I looked it up. I like the video below, although its hyperbolic nature does leave a bit to be desired. So if you want a considerably more detailed answer, have a look over “How a Pope is Elected” on Catholic.org.