Nicki Minaj and Mariah Carey both have reputations for having larger than life personalities - so perhaps it's no surprise that the two would clash as judges on "American Idol."
TMZ reports that during "Idol" auditions in Charlotte, North Carolina, Minaj threatened Mariah, saying, "I'm gonna knock you out" to the singer.
Nicki reportedly added, "I told them, I'm not fuckin' putting up with her fuckin' highness over there."
Producers reportedly ended the auditions for the day so that cooler heads could prevail.
A video of the blow-up was caught on camera: