Of course, the whole thing was a reference to AB's vax status scandal ... when his former chef accused him of getting a fake vax card. While AB swore up and down he was, in fact, vaccinated ... the NFL felt otherwise and handed him a 3-game suspension.
AB was clearly able to laugh it all off as the fan asked him to sign the card ... grinning and embracing the irony as he etched his John Hancock along the bottom.
On top of that, AB posed for pics with fans before the game ... and we're told he was generous to the entire section.
Unfortunately, things changed later on in the day ... as AB made his infamous exit by ripping his pads and jersey off and strolling into the locker room in the middle of the game.