WATCH: Eagles' Jason Kelce Parties with Bills Mafia Ahead of Brother's Matchup - Hanging Out with the Wrong Fans

Ahead of the Chiefs-Bills playoff game, Chiefs TE Travis Kelce's bother, Eagles guard Jason Kelce was seen partying with fans. However, these were not Chiefs fans, but rather, "Bills Mafia:"

Kelce is known for his party-like behaviour, but usually he parties with his own team, or at least his brothers team. But, in this case, he is partying with the enemies.

Though Kelce was seen hanging out with Bills fans, he still made sure to show love to the Chiefs and his brother during the game, as he was ultimately there to cheer them on:

Jason Kelce Celebrates Travis Kelce's Touchdown

Randy Moss is stepping away from Sunday NFL Countdown for a specific reason

OC Shane Waldron makes strange comment on Khalil Herbert

Caleb Williams opens up about rough start

3 front runners step up to try and land Bill Belichick for next season

Caleb Williams buys $12.9 million home: take a look

Marcedes Lewis delivers a message to Shane Waldron

Matthew Stafford gives huge endorsement to Caleb Williams

The Dallas Cowboys secure an important victory against the New York Giants.

The referees called a face mask penalty against the wrong team during the Cowboys vs. Giants game.

Fans are fed up after 3 weeks of more of the same