Jason Kelce angrily threw a fan's phone on the floor after he called his brother Travis “shit” for dating Taylor Swift.

The older Kelce brother and recently retired NFL star was at Penn State on Saturday for the school's big college football game against Ohio State.

Footage posted on social media shows Kelce walking through a crowd outside the stadium with a case of beer in his hand.

As fans lined up for selfies and fist bumps, an unidentified man could be heard shouting, “Hey Kelce! How does it feel that your brother is being insulted for dating Taylor Swift?”

Kelce continues to run for a moment, then turns around, grabs a fan's phone and slams it to the ground in anger. Then he picked up the phone and walked away.

Jason Kelce angrily threw a fan's phone to the floor after he called Travis a “shit.”

Kelce then walked away with the guy's phone and asked him, “Who the fuck now?”

In the footage, a male voice can be heard calling Travis Kelce a “f*****” for dating Taylor Swift

But as he continued to walk away, the man chased Kelce and said, “Give me my phone,” to which Kelce responded, “Who the fuck is now?”

It's unclear whether the phone belonged to the man who made the derogatory comment about Kansas City Chiefs star Travis.

The sound of the phone hitting the ground caused audible cheers from those around him before he continued walking.

Kelce's response shows how close the brothers are. Their relationship is the focus of their hit New Heights podcast, and Jason regularly supports his younger brother at Chiefs games and major events.

Jason has also been at a number of Swift's Eras Tour shows – both with Travis and his own young family – as they have embraced the pop star since her relationship with Travis became public in 2023.

More to follow.