Travis Kelce’s rowdy antics keep his coach feeling young. The Kansas City Chiefs tight end, 34, who has been dating Taylor Swift, also 34, since last summer, caused a stir by shoving the team’s coach Andy Reid, 65, on the sidelines of the Allegiant Stadium in Las Vegas on Sunday during their victorious Super Bowl 2024 face-off against the San Francisco49ers. Andy has now laughed off the NFL star’s meltdown – which seemed to have been sparked when Travis apparently grew furious he didn’t receive the ball on a play – saying during a post-game interview with CBS: “He keeps me young.” But Andy jok…