I don't own Batman or Buffy the Vampire Slayer, or anything related to them.
He was a citizen of Gotham City. Perhaps not a normal citizen, but a citizen nonetheless. He had to be - only legal Gotham City citizens could be thrown in Arkham for long periods of time, and that's where they threw him every time the Bat caught up with him.
However, the Bat was not around tonight...at least not yet, so he got to have some fun. Being a citizen, the Joker decided to go to one of those fancy upscale restaurants, that many more-monetarily-inclined citizens gathered at, just to see if they’d actually serve him, or if, as he expected, people would run away screaming.
Neither one actually.
People froze in horror at the sight of him once he strolled inside. The looks on their faces actually made the Joker giddy, and he grinned widely as he looked around at the horrified faces. This, of course, meant he wasn’t paying much attention to the rest of his surroundings…
…which, of course, meant he didn’t see Bruce Wayne’s date come up behind him with her heel at the ready. He swayed for a few seconds, before falling face first to the floor, barely hearing the woman’s spoken, “I told you these heels were dangerous.”
As his consciousness faded away, Joker had one last thought – being a citizen of Gotham sucked.