Tech billionaires Elon Musk and Mark Zuckerberg engaged in a public feud over leisure activities.

Tech billionaires Elon Musk and Mark Zuckerberg have engaged in a public feud, with Musk recently mocking Zuckerberg's Fourth of July celebrations. Zuckerberg posted a video of himself hydrofoiling while dressed in a tuxedo, waving an American flag, and sipping beer. Musk responded on Twitter, expressing his preference to work rather than engage in leisure activities, reigniting their ongoing public disagreements.