In what seems like the never-ending plot line to American Idol Season 12, Nicki Minaj has once again gone after fellow judge Mariah Carey. The latest incident has Minaj calling Carey insecure and bitter after the show on Twitter. What prompted the new exchange were criticisms of a performer on the show by Carey who also took a subtle swipe at Minaj at the same time. Can't these two just get along? Will either of them be back next season? Will there even be another season of American Idol?