Well, he thought paying for drinks meant he could get grabby with the bartender. I disagreed. Then he thought he could hold me up against a wall and choke me. Which I disagreed with too, on principle, but it turns out he was actually able to do that. So I had to spit JD in his eyes to get him to let go (he didn't even flinch when I kicked him in the balls) and then he starts trying to cast a plague on me, which I didn't expect at all.
Got kind of messy and I'm no longer allowed at that bar.