Jason Kelce I lost it on a person in Pennsylvania… I grabbed someone's phone and threw it on the ground before they stormed off – right after someone in the crowd called Travis a gay insult.

The former NFL star and current commentator was at the Ohio State-Penn State game in Happy Valley on Saturday morning, and a crowd began following the star… cheering him on and initially asking for fist bumps.

However, things didn't stay positive for long… because a troll decided to blast Jason's brother Travis with an insult. You can listen to the video for yourself – it's an aggressive attack on the tight end and his girlfriend. Taylor Swift.

Of note… no video has yet surfaced of the person shouting the insult – so it's unclear whether Jason threw away the right person's phone. A different perspective appears to show the man yelling at Jason just before Kelce takes his phone and smashes it, but it's unclear if he also yelled the insult.