Rudy Giuliani called the attorney representing adult film star Stormy Daniels a "pimp" on Friday, the latest jab in a feud between the lawyers over the actress's claims she had an affair with President Trump Donald John TrumpOmar fires back at Trump over rally remarks: 'This is my country' Pelosi: Trump hurrying to fill SCOTUS seat so he can repeal ObamaCare Trump mocks Biden appearance, mask use ahead of first debate MORE.

Giuliani, the latest addition to Trump's legal team, told Business Insider he wouldn't accept Michael Avenatti's challenge to a debate because he has been "pimping for money."

"I don't get involved with pimps," he said.

"The media loves to give him room because he makes these roundabout charges and they turn out to mean nothing. I think he's going to get himself in serious trouble," he added.

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The insult comes after Avenatti challenged the former New York City mayor on live television to a face-to-face debate to duke out the facts of Daniels's contentious lawsuits against Trump and his personal attorney Michael Cohen.

Avenatti fired back at Giuliani in a tweet Friday evening:

Hey Rudy - It turns out I’m not the only “pimp” you have experience with. History evidently is repeating itself. #pimped #bastahttps://t.co/YUmzf0c2oT — Michael Avenatti (@MichaelAvenatti) May 11, 2018

Giuliani said earlier this week he wouldn't debate Avenatti even for "$10 million," saying "all he does is put out statements in the press and they fawn all over him."

Giuliani made waves earlier this month when he confirmed for the first time that Trump repaid Cohen for the $130,000 nondisclosure payment that Daniels received just weeks before the 2016 election. Giuliani later clarified that Trump was unaware of that specific payment until recently.

Updated: 6:50 p.m.