Lil Uzi Vert is threatening to return to his roots as a mumble rapper.

Lil Xan is threatening to join him.

However, Uzi Vert shot Diego down.

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"I'm about to start mumbling," Uzi Vert Tweeted.

"Let's mumble together @LILUZIVERT," Xan proposed.

"I mumble alone," Vert shot back.

Uzi Vert must have felt bad about doing Xan like Flamin' Hot Cheetos did because he deleted the Tweet.

Would you like to hear Vert and Xan make sweet mumbles together?