Southside sent a heated message to Lil Uzi Vert after Vert got into an argument with his girlfriend, Yung Miami of The City Girls.
It's not clear why the Eternal Atake rapper and Yung Miami got into it, but at one point they agreed not to be cool with each other anymore.
"Uzi, me and you don't have to be friends," Yung Miami told him.
"I ain't ever got to see you just like you ain't never got to see me," Uzi shot back.
Southside — who recently announced his retirement from music — didn't care for Vert's tone in the video, nor did he like him checking his girl.
"I'mma say this one time," said Southside. "Uzi, don't address none to my b*tch ... You handle your b*tch, n*gga, you stay on your side ... You got one more time to say something. I promise you I'mma punch your teeth out your mouth. Don't say nothing else, n*gga... If you don't like my b*tch, don't like my b*tch. Let them do them... Stay the little weirdo you is, keep rockin' purses, keep doing that b*tch sh*t you doing."
Afterward, Vert said that he was just fooling around with Yung Miami and there's no beef between them.
“That’s my gf best friend I was playing with her she always curse me out,” he wrote.
Southside's been going wild lately and was even accused of threatening to kill his own dad.