Elon Musk just can't seem to resist the dark urge to start beef with Mark Cuban

• Elon Musk mocked Mark Cuban after the latter said he'd vote for Joe Biden's reelection.
• Cuban said he'd still vote for Biden even if the president "was being given last rites."

Elon Musk couldn't resist the urge to rip Mark Cuban after the latter voiced his support for President Joe Biden.

On Monday, Cuban told Bloomberg he'd still vote for Biden even if the president "was being given last rites."

"'If Biden were a flesh-eating zombie with 5 seconds to live where, upon being re-elected, Earth would plunge into a 1000 years of darkness, I would still vote for him.' — Mark Cuban," Musk wrote in an X post on Monday.

Musk has been a harsh critic of Biden's leadership. Musk, who said he voted for Biden in 2020, has been critical of Biden since the White House excluded Tesla from the president's 2021 electric-vehicle summit.

"I think I would not vote for Biden," Musk told the moderator Andrew Ross Sorkin at The New York Times DealBook Summit in November. "I'm not saying I'd vote for Trump."

Cuban, for one, didn't seem too fussed by Musk's jab.

"While I have your attention. Wanted to say thank you! Your consultants for @tesla followed up today about using @costplusdrugs to save the company money. Truly appreciate it," Cuban wrote in a reply, tagging the Mark Cuban Cost Plus Drug Company.

"And my limit is 300 years of darkness," Cuban added.

This isn't the first time Musk has gone after Cuban for the latter's views and remarks.

The two billionaires in January feuded over their differing views on efforts toward corporate diversity, equity, and inclusion. Musk has been slamming DEI on X, calling it immoral and illegal and saying that companies who adopt DEI initiatives are discriminating "on the basis of race, gender, and many other factors."

Cuban disagreed with Musk's views and defended DEI. At one point, the argument heated up, and Musk called Cuban a "racist" for supporting the initiatives.

Cuban isn't the only one who has been caught in Musk's crosshairs. Musk has lately been picking fights with his business rivals.

The mercurial billionaire slammed Google for its Gemini chatbot's image-generation feature last month. In a post on X, he accused Google of running "insane racist, anti-civilizational programming."

And on Thursday, Musk filed a lawsuit against OpenAI, the artificial-intelligence company that he cofounded with Sam Altman. In his lawsuit, Musk accused the company of violating its nonprofit mission when it partnered with Microsoft.

Representatives for Musk and Cuban didn't immediately respond to a request for comment from Business Insider sent outside regular business hours.