Aniassism is the set of beliefs that states that all the universe, indeed, all of creation, rose into being after being shit out a hippopotamus's ass. This hippopotamus, generally known as the Great Hippo Aniassus, is doomed to search for food in the giant Void for all eternity, and it is fated that the Great Hippo Aniassus shall eventually return and devour the universe, due to lack of anything else to eat.