Jason Kelce's job is pretty sweet -- the future Hall of Famer was back to his tailgate shenanigans ahead of "Monday Night Football" ... partying it up with the notoriously rowdy Bills Mafia!!
Former Buffalo center Eric Wood documented the debauchery ... showing the Philadelphia Eagles legend -- sporting a Fred Flintstone costume and Bills-themed hat -- doing a shot of Gatorade out of a bowling ball.
Jason Kelce with #BillsMafia tonight pic.twitter.com/U0d46IB5qF
— TalkSportsWithMe (@billylaynejr) October 14, 2024 @billylaynejr
Of course, the stunt is common prior to Bills games .