Big-tech billionaires Elon Musk and Mark Zuckerberg appear to have agreed to fight each other in a cage fight.

The brawl first gained traction Tuesday after Musk tweeted in response to a claim that Zuckerberg's Meta might be developing a competitor to Musk's Twitter reportedly called THREADS.

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"I'm sure Earth can't wait to be exclusively under Zuck's thumb with no other options," Musk tweeted. "At least it will be 'sane'. Was worried there for a moment."

"Better be @elonmusk careful I heard he does the ju jitsu now," a Twitter user commented.

"I'm up for a cage match if he is lol," Musk replied.

The suggestion seemed comical at first, but Zuckerberg soon replied on Instragram with a screenshot of Musk's Tweet and the message "send me location," a phrase made iconic by former UFC Lightweight Champion Khabib Nurmagomedov.

So, how do the two billionaires stack up against each other? Here's the tale of the tape.

The South African-born billionaire stands at 6 foot 1.5 inches and towers over the 5 foot 7 inch Zuckerberg, but size is not everything in a fight.

Musk, 51, may have the bigger bankroll at $245.9 billion compared to the 39-year-old Zuckerberg's $100.9 billion, but the Meta man actively trains mixed martial arts and has competed and won in Brazil Jiu-Jitsu.

This is also not the first time that Musk has challenged someone to a fight.

In March 2022, he challenged Russian President Vladimir Putin to "single combat.

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"I hereby challenge [Vladimir Putin] to single combat. Stakes are [Ukraine]," he tweeted.

That fight never came to fruition.