Jason Kelce tells Buffalo fans all about THAT shirtless celebration

Jason Kelce tells Buffalo fans all about THAT shirtless celebration and his “electric” pregame tailgate – while joking that he had “FOURTY Miller Lites” before watching brother Travis with girlfriend Taylor Swift

Jason Kelce kicked off his wild Sunday in Buffalo by drinking a shot from a bowling ball before ripping his shirt off during the Chiefs' win over the Bills.

The Eagles center made headlines Sunday night when he joined Taylor Swift in a VIP suite to watch brother Travis Kelce help Kansas City reach the AFC championship game.

The elder Kelce was seen drinking beer and jumping out of the penalty box while his brother scored two touchdowns at Highmark Stadium — where temperatures reached as high as 24 degrees Fahrenheit.

Jason even picked up young Swift fans to catch a glimpse of their idol. And on Wednesday, the Eagles star opened up about his exuberant day in Buffalo, which began with him following closely alongside Bills fans.

On the latest episode of the brothers' New Heights podcast, he explained: “I got caught up in the shenanigans and thought, 'I'm going to have to take my shirt off at some point.'

Jason Kelce tells Buffalo fans all about THAT shirtless celebration

During the Chiefs' win, Jason Kelce was seen drinking beer and celebrating shirtless

Kelce holds up a young fan to help her show Taylor Swift her homemade sign Swift attended the Chiefs' game against the Bills on Sunday

He also lifted a young Taylor Swift fan so the young girl could wave to her idol in Buffalo

“But I can't take my shirt off in the box, who takes their shirt off in the box?” So I think: I'll do that. I'm going to take my shirt off and jump out of this box, and then I can be like my fellow Buffalo Bills Mafia guys.

“This is how my brain works after 40 Miller Lites.”

Kelce was determined to try out a typical Sunday with the “legendary” Bills Mafia, and that meant drinking long before kickoff in Buffalo. He would have stripped to the waist earlier in the day if the opportunity had arisen.

“I haven’t been to many tailgates, the only other tailgate I’ve been to was Arrowhead,” he continued. “It was an electric atmosphere at the Bills Mafia.”

Kelce continued, “I didn't come out until later.” “I wanted to go out early and then take my shirt off and be out there because – I don't know if I'm wrong – but I feel like taking it off of the shirt is like a Buffalo Bills thing.”

“I wanted to take everything off and be out there with the fans,” the Eagles center revealed this week

“I wanted to take everything off and be out there with the fans,” the Eagles center revealed this week

Kelce drank with Bills fans at a tailgate before their playoff game against the Chiefs

Kelce drank with Bills fans at a tailgate before their playoff game against the Chiefs

“I wanted the full experience. I wanted to take everything off and be outside with the fans since I don't get out there much – I only hit a few tailgates when I entered the stadium…but I did see (superfan) Pinto Ron's tailgate with the bowling ball. I took a shot from the bowling ball – no idea what kind of liquor it was, I didn't ask any questions!'

The game also offered Kelce a chance to blow off steam after a disappointing season with the Eagles, who lost in the Wild Card round.

“We just finished a very trying season in Philadelphia, mentally and physically – especially mentally, at the end of something like that you're just exhausted,” he said.

“It wears you down… you know there's going to be a lot of change, you know it's affecting a lot of people's lives and this team, and this was an opportunity to go to a place and forget about all that. “Have fun and cheer for your brother.

“Because of the Super Bowl and other circumstances, I haven’t had a chance to go to one of your games in two years.”

Kelce reached out to former Bills players Ryan Fitzpatrick and Eric Wood, and Wood took him to the Big Tree Inn, “a great bar right next to the stadium.”

“They gave me an incredible feeling, at home, with the fans, everything was just incredible,” he said.