Do the Black guys or Asian guys do anything with your ass at all?
"It's a crime of passion almost. You just get caught up in the moment and you want to do it to see how she's going to react. Sometimes you do it just as an experiment to see what she likes and sometimes it's a male dominance thing."
I think that sums it pretty well. I also would posit that it might have something to do with trying to get you heated up even more.
Because we have to chase him. Because he's the hero Gotham deserves, but not the one it needs right now. So we'll hunt him. Because he can take it. Because he's not our hero. He's a silent guardian, a watchful protector. A dark knight.