Jake Paul has taken aim at Dana White, Conor McGregor and Nate Diaz in a newly-released 'diss tape'.
Paul has been embroiled in a row with UFC president White for several months with the YouTube star campaigning for improved fighter pay and fighters' rights.
He has also called out both McGregor and Diaz for boxing bouts having amassed a record of 5-0 as a professional fighter.
The track, which is just over three minutes in length, begins: "Now everybody from the UFC, put your motherf****** hands up and follow me..."
White is the first to be targeted as the chorus chants: "F*** Dana, f*** Dana White, F*** Dana, f*** Dana White, F*** Dana, f*** Dana White..."
Paul then turns his attention to UFC welterweight contender Jorge Masvidal with whom Paul was previously friends but who has now been offered $5million to fight the social media star.
"First of all Masvidal, you ain't rich, 50 fights for $5m that ain't s***," Paul says before addressing the issue of fighter pay.
"Underpaid fighters, where the health care rights? Got them risking all their lives and they can't quit," he says.
Diaz is the next to be included in the diss as Paul says: "All that little Stockton s*** is cool but that lisp got me thinking, 'Do you speak a different language?'
Eventually Paul focuses on McGregor as he takes aim at the Irishman's losing record - even if Paul conveniently ignores his rival's win over Donald Cerrone in 2020.
"McGregor I ain't seen you win in five years, you rich little weirdo, ugly ass veneers," he sings. "Took so many losses wound up at VMAs trying to fight with MTK, no surprise here.
"Lamborghini boat but your career is sinking, makes me wondering what Dee is thinking.
"I ain't even dissing now, I'm really speaking, wound up in jail too many times with all the liquor drinking."
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Paul finishes his tape by returning to White, insisting he will not let up in his fight to improve pay for the promotion's stars.
He also refers to a challenge he and White had whereby Paul would submit to a drug test while White would be tested for cocaine use.
"Dana, pay your fighters more, give them healthcare you scumbag," he concludes. "I haven't met a single person who says anything good about you.
"I passed my drug test and you went silent. I'm keeping my foot on your neck until you tap b****.
"Stop raising your pay-per-view prices on fans and not paying fighters more... greedy, old, lonely, bald b*****."
