Ever since Nicki Minaj was hired to be a judge on American Idol, she and Mariah Carey have downplayed any rumor of the two of them fighting on the Idol set.  But TMZ now has a video that may prove that the two aren't exactly the best of friends. The video was shot during Idol auditions in Charlotte NC yesterday and it shows a pissed off Nicki  yellin’ out "I told them..i'm not f**kin' puttin’ up with her f**kin' highness over there." 

Now there's other rumors that off camera Nicki yelled out that she was gonna knock out Mariah…and that Mariah kept throwin' jabs back at Nicki. Things apparently got so bad, that the cut the auditions short.  And this all got out of hand over a disagreement over a contestant’s performance.