AEW star MJF had an all-timer of a promo at Dynamite on Wednesday ... ruthlessly insulting the hell outta Josh Allen and the Bills -- and he did it in front of a ton of Buffalo fans!!
The hilarious moment went down at KeyBank Center ... when MJF made his return to the ring after months away. He started off praising the NFL quarterback and the city, but quickly turned on the audience -- disrespecting their appearance, their quarterback and even their incomes.
MJF called the crowd "grotesque, poor lard asses" as he unleashed the iconic promo ... with fans making sure they were pissed with his words.
But, it didn't stop there -- MJF then took his Allen Jersey off ... and slid it back and forth between his legs.
On top of that, MJF also teased leaving for a REAL wrestling promotion in 2024 ... amid rumors he is unhappy with his contract and has gotten interest from WWE.
A shirtless MJF eventually left the ring and let Moxley take the mic ... whose promo did not insult the thousands of fans in attendance.
Bills fans won't have too much time to focus on MJF, though -- their season opener is hours away against the L.A. Rams.