What could this device's backstory possibly be? Was there a crime wave of ninjas flipping about with exposed penises in the months that led up to this? Imagine the headlines: "Penis-Flipping Ninja Crime Wave Baffles Police." And this is the less weird option, since the alternative is that Batman was constructing his Batarangs and Batmobiles and Bat Grappling Hooks and randomly thought to himself, "I can handle crime, but what if I can't handle crime's dong?"
Ha! "Handling dong."
Moments later, newspaper photographer and screeching damsel Vicki Vale tries to distract the Joker by kissing him. She macks his big purple jacket in a way that's not erotic or distracting, but makes everyone in the cast feel terrible for her.
"Lint gets me so hot."
Vicki Vale has been kidnapped by Batman or the Joker at least four times in this movie already, depending on how you count. When you spend your life being dragged around by costumed psychopaths, awkwardly smooching someone's jacket is as close to a master plan as you're going to get. And then she drops down, and the Joker thinks, "Five minutes ago she hated me. This is going so much better than I expected."
Spoiler: His balls are about to match that tie color.