Patrick Mahomes Sr. was at Highmark Stadium watching his son book the Kansas City Chiefs a spot in the AFC Championship game with a come-from-behind win over the Buffalo Bills on Sunday night.

Pat Sr., a former athlete himself, joined other family members of Chiefs players in a box, including his son’s wife, Brittany, Taylor Swift, and Jason Kelce, among others.

Things got pretty wild in there. A shirtless Jason stole the show as he braved the cold and celebrated like a man possessed after his brother, Travis Kelce, scored his first touchdown. Brittany and Taylor, who have become besties since the latter began dating Travis, got in on the action too and, at one point, seemed to startle Mahomes’ dad.

The former baseball player was about to take a sip out of his beer when he was distracted by the two ladies making a fuss. He turned back in apparent surprise and probably a bit of annoyance before going back to his drink.

The Chiefs won 27-24 and will play the Baltimore Ravens next Sunday in what could be a game for the history books. Everyone’s hoping for another appearance from Jason.