I normally don”t do stories like this unless it’s gay related, but then again we are talking a bout Mariah and Nicki…Plus i love watching celebs coming undone and getting caught losing it…

Nicki Minaj had some kind of a mental shitz attack on Mariah during the  ”American Idol” auditions in Charlotte, North Carolina. Threatening to “I’m gonna knock you out” … according to TMZ.

In the footage, obtained by TMZ, Nicki is clearly furious … shouting, “I told them, I’m not f*ckin’ putting up with her f*ckin’ highness over there.”

Sources say Nicki later threatened to “knock out” Mariah … but that part wasn’t captured on tape.

We’re told the whole thing exploded over a disagreement about a contestant’s performance.

According to our friends at MouthToEars.com, producers ended the auditions for the day so the two judges could cool down.

Darling Nicki, did you see how Mariah kept her cool? You could learn a thing or two about dignity…:)

via Nicki Minaj Cusses Out Mariah Carey During ‘American Idol’ Audition — Caught on Video! | TMZ.com.