Nicki Minaj derailed the “American Idol” auditions in Charlotte, North Carolina Tuesday, after swearing at Mariah Carey and threatening, “I’m gonna knock you out” … but Mariah FIRED RIGHT BACK with insults of her own. [VIDEO]

Nicki Minaj derailed the “American Idol” auditions in Charlotte, North Carolina Tuesday, after swearing at Mariah Carey and threatening, “I’m gonna knock you out” … but Mariah FIRED RIGHT BACK with insults of her own. [VIDEO]

(via mylifeasandreww)