I see so many bad players play the drunken guys line.
You checked behind giving them the information to know their ahead so they shove. It makes me laugh because a good player will fold here so it means any value he could get is surely lost with the way he plays. And most of the time is called only by better.
Perhaps he was drunk but he didn't play the hand all that badly, he trapped you and he made sure u told him he didn't have better.
At the end of the day AJ isn't beating much with that board... And bad players will often bluff with Ax or Kx but since you had an A and k doesn't hold to anything with that board a lot of his bluffing
hands are out of his range now.