Nicki Minaj and Mariah Carey reportedly got American Idol filming shut down today and/or drummed up even more publicity for the show. The pair were judging auditions in Charlotte, N.C. and things got loud and tense. TMZ says Minaj threatened to "knock out" Mimi, and while we can't verify that, we can attest that there is a high-octane, confusing video with Nicki calling Mariah "her fucking highness." (Update: here's a partial translation of the rant. Again, "yikes" and/or "American Idol, returning soon!"