Elon Musk Says It's Mark Zuckerberg's Fault MMA Fight Didn't Happen

Elon Musk and Mark Zuckerberg, the biggest fight that never happened, ain't dead just yet ... 'cause the billionaire X owner says he's still ready to beat up Zuck!

52-year-old Musk joined Joe Rogan's JRE pod on Tuesday ... when the convo turned to the fight with the 39-year-old Facebook founder. For the first time, Elon explained, from his perspective, why negotiations broke down, torpedoing the bout.

“Italy actually was willing to let us use the Coliseum,” Musk told Rogan.

“I was like, well, can’t turn that down. Then I was like, well, if it’s going to be in the Coliseum, I like UFC and everything, but we don’t have tons of ads in UFC branding on the Coliseum 'cause it’s a place of great history. You don’t want to have it be all like NASCAR. And then Zuck pulled out.”

Of course, talk of the fight between the two ultra-wealthy moguls started around the time Zuck launched his X-competitor, Threads. Elon tweeted he was "up for a cage match," and Mark responded, channeling Khabib, saying ... "Send me location."

And, we were off ... unfortunately, a deal never materialized, and Zuck accused Musk of screwing around with no intention to actually fight.

"[Zuckerberg] accused me of not being serious, and I said, ‘Listen, at the end of the day, I’ll fight you any place, anywhere, under any rules,’” Elon told Joe.

As for who'd win the fight, Elon's clearly heard the people who say Mark would kick his ass because of his jiu-jitsu experience. He doesn't agree.

“I’m like 50% heavier than him,” 6'2", 240-ish lb. Musk said.

“I’ve got my patented 'walrus' move. I just lie on him. A walrus doesn’t need martial arts training because it’s really big.”

Bottom line ... the fight may be on life support, but Elon's indicating there's still a chance it goes down, and he says he's ready to crack right now.

“I don’t need any time, no time at all."