I dont know what fn is but i might if you tell me :D
So this term is usually known as laws so absurd that it shouldn't even be a law. Examples are like "One may not eat oatmeal on their porch on Saturdays in ______". The term came from the idea that they shouldn't need to be stated and that they are just morally wrong. Or that one MUST do something because it is morally right to do that.
Lewis<span> & </span>Clark Expedition<span>. In 1804, Jefferson sends a team to explore lands acquired in the Louisiana Purchase. The Corps of Discovery will travel nearly 8,000 miles over three years, reaching the Pacific Ocean and clearing the path for westward expansion.</span>