Shortly after spinning a Tekashi 6ix9ine track, Flex played a snippet from "Gucci Gang." It was clear that the crowd had been in a lull, awaiting time to lapse between sets --but then without warning the record stopped and what Flex had to say in the proceeding moments put them in a frenzy.

"F**k that! That n****s trash! That n****s trash! That n****s trash!" Flex screamed. That's when he threw Tekashi's banger on, he announced: "Born and raised in New York City. Where you at?"

Flex has been going in on Pump for months now. He's dismissed the "Esskeetit" rapper's drug-laden lyrics as nothing more than "Mickey Mouse bars" and in spite of the infectious vibe that the repetitive hooks on his songs have brought a viral audience, the rap elder continues to mock the young Floridian.

Earlier this year, Flex mocked a video that Pump shared of him blowing his nose with a hundred dollar bill, by responding that he could've used the money to buy a ghostwriter. The jab came only weeks after he included Pump in a comment noting his list of "wack rappers."

Watch the clip above.