Jason Kelce joined the ESPN “College GameDay” crew for some fun festivities on Saturday.

But things took an ugly turn after a fan's homophobic comment outside Beaver Stadium was used in reference to his brother Travis.

The retired Eagles center was seen running through University Park, Pennsylvania, with a case of beer in his hand, as screams and cheers could be heard around him from people who recognized the former NFL star.

But one comment stood out from all the noise after a fan made a disparaging comment about Travis Kelce's high-profile relationship with Taylor Swift.

“Kelce, how does it feel that your brother is ready to date Taylor Swift?”

Warning: Explicit language

Kelce quickly turned around to find the person who had made the offensive comment and raised his hand in disbelief.

When Kelce realized who it was, he grabbed the fan's phone and slammed it to the ground in anger.

Warning: Explicit language

A few gasps could be heard from the crowd around Kelce, who turned and stormed away.

Kelce has not yet responded to the incident on social media.

Earlier in the morning, Kelce appeared on the “GameDay” set with Pat McAfee to attempt a field goal challenge, which has become a fun weekly part of the show.

While wearing Timberland boots, Kelce missed both attempts, firing them wide left.