Donald Trump and Russell Brand have gone head-to-head in an epic Twitter battle of egos possibly only matched by Jeremy Clarkson's tiffs with Piers Morgan.
It was probably only a matter of time until two of the internet's biggest self-promoters finally came to blows, but with Brand venturing deep onto Trump's home patch, the 68-year-old saw his chance to pounce.
The star of the US version of The Apprentice started the row after saying he had watched Brand, who is busy plugging his book in New York, on a late-night chat show in the US.
The millionaire business magnate then derided the Capitalist-hating Hollywood star, calling him a "loser" and making things personal.
Trump's attack on Brand may have been sparked after the comedian described the tycoon in a US radio interview this week as a “bit daft” adding: “It’s not like he’s a person who’s a super guy or anything. He’s just good at hungry hippo, and we live in hungry hippo land.”
Dragging Brand's ex-wife Katy Perry into the Twitter dispute, Trump added:
— Donald J. Trump (@realDonaldTrump) October 16, 2014
It was not immediately clear what “letter of apology” Trump was referring to, but it appeared to get Brand's attention, with the comedian-come-political commentator hitting back with a sassy retort.
.@realDonaldTrump are you drunk when you write these tweets? Or does that foam you spray on your bald head make you high?— Russell Brand (@rustyrockets) October 16, 2014
Brand then sent Trump some biting reading material and attributed Trump's fortune to his "daddy" rather than any entrepreneurial skill.
Just to rub salt in the wound, Brand then shared an online piece that would have left Trump tearing off his toupee in fury, titled: "In Financial Circles, It's Pretty Well Known That Trump Is a Deadbeat."
The devastating report suggests Trump’s record was “replete with bankruptcies, lawsuits, and aggrieved former investors”.
Trump responded in perfect playground fashion by repeatedly goading Brand by spitefully tweeting Perry about her ex-husband.
.@katyperry Katy, what the hell were you thinking when you married loser Russell Brand. There is a guy who has got nothing going, a waste!— Donald J. Trump (@realDonaldTrump) October 16, 2014
.@katyperry I watched Russell Brand and I think his mind is fried - he looks really bad. Russell is a total joke, a dummy who is lost!— Donald J. Trump (@realDonaldTrump) October 17, 2014
Trump wasn't the only right-wing, Obama-hating, capitalist to face Brand's wrath this week after the comedian took on the entire Fox News network.
Brand, who has been engaged in a three-month war of words with the broadcaster, was apparently scheduled to confront his nemesis Sean Hannity on his show this week, however the encounter never took place.
In response, Brand fronted an episode of his news magazine show The Trews from outside Fox News headquarters at the Rockefeller Center in midtown New York, discussing immigration and Islamophobia before security guards pounced, escorting Brand from the lot.
"We'll run this building one day," warned the comic before jumping in a car.