After a Mack 10 and Jamie Adler West Coast Fest concert in Los Angeles, a fight broke out -- and we are still confused at what initiated the brawl. All the action went down shortly after 1 a.m. at Club Nokia in downtown LA where and an unidentified woman goes off on Ray J, then things spiral out of control.

In the video, the woman is screaming:

"I'm the [expletive] they wouldn't go get to whup [expletive]," and "I ain't no fake-[expletive] n***** from Carson!"

Video courtesy of TMZ (this is not safe for work):