Ray J got into a lively scuffle with another man early Friday morning after Ray allegedly called a woman a "fat b*tch."

The brawl erupted at Club Nokia in downtown L.A. around 1 am Friday, after Mack 10 and Jamie Adler's West Coast Fest concert.

According to an eyewitness, after Ray J insults a woman, she screams, "I'm the b*tch they wouldn't go get to whup b*tches a*ses and "I ain't no fake-a*s ni**er from Carson (Ray J's hometown."

It's not clear how the fight started, but it looks like Ray J gets i some good shots.