This diagram doesn’t make sense as a Venn! An overlap means that something belongs to both categories. How can a firearm be also a rabid pet? How can a home-made saucer be a pet? The person who designed this has no idea how a Venn works. This would work if the main categories were Things crazy rednecks own, things alien conspiracy theorists own and things Michael Jackson owned. At the overlaps we’d for instance have firearms for conspiracy theorists. Or flying saucers for Michael and the alien conspiracy theorists.