Mark Zuckerberg's preparation for a potential fight with Elon Musk might just relegate him to sleeping on the couch ... because the billionaire revealed Wednesday his decision to build an Octagon at his home has really ticked off his wife.
Zuck got the fighting arena installed in his backyard this week ... and when he pointed it out to his significant other, Priscilla Chan, he appeared to think she'd be stoked about him being able to now grapple just a few feet from his living room.
"It looks awesome," he said over text to Chan ... adding, "We have plenty of yard space!" when he noticed she wasn't exactly thrilled over it.
That's when, however, she dropped a bomb on him ... saying, "I have been working on that grass for two years."