".@FLOTUS leads the crowd in #FlyEaglesFly ahead of kickoff," the official account of Sunday Night Football on NBC wrote in sharing the video on Twitter.
"Fly, Eagles, Fly" is the only sound coming from the audience in that clip. However, folks in the stands heard different sounds and shared their observations on social media.
According to Tea Party Patriots, the crowd booed and shouted "F*** Joe Biden."
In a video shared by Newsmax host Benny Johnson, some in an upper corner of the stadium were chanting a more family-friendly version of "FJB," "Let's Go, Brandon":
Others in attendance did not share video evidence, but still reported the boos and the chants on social media.
NFL veteran Clay Harbor, who was drafted by the Eagles in 2010 and spent three seasons with the team, wrote, "Philly just BOO’d Jill Biden BAD." He also included a laughing emoji to indicate he found the incident humorous.
Self-described "Eagles insider" John McMullen tweeted, "FLOTUS Dr. Jill Biden gets booed. Being an 'Eagles fan' didn't save her."
Several media outlets have also reported the story. Notable sports site OutKick is one such outlet, though writer Matt Reigle claimed late Sunday night that videos of the boos and "FJB" chants were difficult to find on social media. However, a quick search of "Jill Biden" on Twitter on Monday afternoon yielded dozens of tweets that included the video. It is unclear whether the videos were less readily available when his story was published.
Jill Biden's husband, President Joe Biden, is also a lifelong Eagles fan. In May 2021, he described his fellow Eagles fans as "the most informed and most obnoxious fans in the world."
Regardless of any supposedly anti-Biden sentiment from the crowd on Sunday, the Eagles went on to best the Cowboys, 26-17, and are now the only undefeated team in the league.