The older Kelce brother was watching from one of the best seats in the house – where he met his brother’s girlfriend Taylor Swift for the first time – at Highmark Stadium but couldn’t contain his emotions when his brother scored a vital touchdown for the Chiefs – his first of two on the night.

The first Travis touchdown gave the Chiefs a 13-10 lead in the second quarter and the Chiefs man celebrated with a heart-signal hand-gesture before blowing a kiss up at his loved ones in the stands.

Jason was filmed roaring into the night without his top on, holding a can of beer in the 20 degree weather. His wife Kylie could be seen watching on in the background as the celebrations in suite erupted while mom Donna was pointing at Jason going wild.

He was then sensationally filmed jumping out of the window of the box and climbing into the stands to celebrate with the thousands of fans packed into the stadium. He necked the rest of his beer before climbing back through the window in extraordinary scenes.

+10
View gallery

Jason Kelce could not hold back after seeing brother Travis score a touchdown in the game

Kelce then jumped out the window of his suite to celebrate with the fans in the stands

+10
View gallery

Swift celebrated as Kelce got a vital touchdown in the second quarter for the Chiefs

+10
View gallery

Kelce scored two touchdowns on the night – giving Swift plenty to cheer about in the stands

+10
View gallery

Kelce made a heart-gesture to the stands, with girlfriend Swift cheering him on

+10
View gallery

Jason went wild as Travis scored his first touchdown in eight games to put the Chiefs ahead

+10
View gallery

The Eagles man was celebrating crazily with a beer in his hand and his brother’s touchdown

Jason continued knocking the beers back with Bills fans lapping up the excitement

+10
View gallery

The NFL legend was even fist-bumping fans as the dramatic game was ongoing

Josh Allen went over the line before halftime but Kelce then got a second touchdown right at the beginning of the third quarter in a frankly breathless game of football.

When Isiah Pacheco scored a touchdown for the Chiefs to reclaim the lead at the start of the fourth quarter, it was the fifth time the lead had changed. It was another touchdown that sent Swift wild in the stands with the Chiefs within touching distance of a breathtaking victory.

But it was Jason’s celebration that had social media talking and even after things cooled down, he kept his shirt off.

Pat McAfee shared the video of him entering the stands on his own X account and wrote: ‘Hopped back up in the suite WAY TOO EASILY… what an absolute beast.’

Pictures showed him knocking back even more cans of beer and reaching out to fist-bump the fans in rows nearby.

The Chiefs shared the video of Eagles man Jason’s celebration, calling him: ‘No 1 hype man.’

And the NFL shared a picture of Jason screaming with the caption: ‘WE HAVE REACHED PEAK JASON KELCE.’

Before the game, Jason was seen downing beer among the fans tailgating at Highmark Stadium before kickoff – with his New Heights podcast account sharing the clip and calling him ‘man of the people’.

It comes amid the 36-year-old considering his future in the game after his Philadelphia Eagles team lost in the first round of the playoffs on Monday night.

Judging by the scenes in Buffalo, Jason’s excitement indicates he either isn’t ready to say goodbye to playing the game just yet – or that he finds life far more enjoyable in the stands.

+10
View gallery

Travis Kelce celebrated his Chiefs touchdown in scenes that were tame compared to Jason

+10
View gallery

The tight end also appeared to blow a kiss towards his loved ones cheering him on