“There are rumors that Elon Musk has again challenged Mark Zuckerberg for a fight,” joked an X user and shared the photo. “For Elon Musk and Sundar Pichai, phone is way more important than President Trump,” commented another. A third joked, “These kids and their damn phones.”

The swearing-in ceremony in Washington, moved indoors due to glacial temperatures, is being attended by former presidents, foreign dignitaries, tech and business executives, and an assortment of performers and celebrities.