Zuckerberg accepts Elon Musk's challenge to a cage match

In an Instagram story on Wednesday, Mark Zuckerberg publicly accepted what was likely a joking challenge to a cage fight with Elon Musk, in response to a Twitter thread from Tuesday. 

The thread in which Musk proposed the challenge discussed a new Meta feature called "Threads," intentionally made to be similar to Twitter.

Musk's response to the initial tweet on the Meta project included, "I’m sure Earth can’t wait to be exclusively under Zuck’s thumb with no other options." When another humorously warned of Zuckerberg's current combat training, Musk responded "I’m up for a cage match if he is lol."

On Instagram stories, Zuckerberg posted a screenshot of the thread with the caption "Send Me Location".

Then back on Twitter, Musk responded to a article about the challenge, "Vegas Octagon," which is the location of many a fight in Las Vegas, Nevada, run by the Ultimate Fighting Championship (UFC).

Musk claimed in a tweet, "I almost never work out, except for picking up my kids & throwing them in the air." He suggested his only move is called "the walrus," which involves sitting on the opponent and not moving, demonstrating the value of a higher weight when fighting.

Zuckerberg's most recent post on Instagram is a video showing him learning jiu jitsu with the caption, "Great learning from jiu jitsu legend @mikeymusumeci... and starting to prepare for our MMA debuts 😉."

Neither CEO has contacted the other publicly on the other's rival platform or publicly confirmed a physical fight.

Though the fight may be only a joke, the rivalry between Twitter and Meta is real. Considering Musk's tweets about Zuckerberg rival "Thread" interface, tensions could result in something other than a physical fight.