Godwin's Law (also known as Godwin's Rule of Nazi Analogies)
 is a saying made by
Mike Godwin in 1990. The law states: "As a discussion on the
Internet grows longer, the likelihood of a comparison of a person's being compared to
Hitler or another
Nazi reference, increases."
. That means that as more people talk on the
Internet for a longer time, it becomes more and more likely that someone will talk about Hitler or the Nazis.