
Lucifer was the problem here, but this scene is still funny
Al was just minding his own business with his drink. Lucifer started antagonizing him on sight. He minimized everything Al did to help the hotel, rubbed salt in the wound by taunting Al about his fight with Adam, and he even tried to drag Angel Dust into it (who wasn’t paying attention to them).
Other than the obvious passive aggression from the mug he chose for his drink, Al was being very cordial and surprisingly patient. If I were in this situation, I would’ve ignored him and walked away as soon as he started with the rage bait. I guess Al took the bait because he was in pain here.