WASHINGTON (AP) — Elon Musk and Mark Zuckerberg are ready to fight, offline. In a now-viral back-and-forth seen on Twitter and Instagram this week, the two tech billionaires seemingly agreed to a “cage match” face off. It all started when Musk, who owns Twitter, responded to a tweet about Meta reportedly preparing to release a new Twitter rival called “Threads.” He took a dig about the world becoming “exclusively under Zuck’s thumb with no other options" — but then one Twitter user jokingly warned Musk of Zuckerberg's jiu jitsu training.