[Joker bursts from the door, to see Batman hanging above a tank filled with piranas]
The Joker: HARLEY!
Harley Quinn: Hi, Puddin'! You're just in time to see the...
[Joker slaps Harley across the room, then turns to Batman]
The Joker: Excuse me just a minute.
Harley Quinn: But Puddin', I-I don't understand! Didn't you want to finally get rid of Batman?
The Joker: Only if *I* do it, idiot!
Harley Quinn: But it's still your plan, see?
[shows him his blueprints]
Harley Quinn: Everything just like you said, except I hung the guy upside down so he sees the little frowns as little smiles. Now it all works!
[Joker grabs the blueprints and tears them up]
The Joker: Except you had to *explain* it to me! If you have to explain a joke, THERE IS NO JOKE!
[He advances on Harley, growling. Nervously, she grabs hold of a swordfish]
Harley Quinn: Now calm down, Puddin'...
The Joker: You've forgotten what I told you a long time ago. One of the painful truths of comedy...
[grabs the swordfish out of her hands]
The Joker: YOU ALWAYS TAKE SHOTS FROM FOLKS WHO JUST DON'T GET THE JOKE!
[Joker whacks Harley with the swordfish, sending her crashing out the window and plunging down several stories to land in a pile of garbage, apparently dead]
The Joker: And don't call me Puddin'.
Harley Quinn: [Harley is alive among the rubbish, but bloodied, barely conscious and dejected] My fault... I didn't get the joke.