How to joke the Joker (Suicide Squad)

Sarcasm

No one's P.O.V.
The car ride was absolutely silent. No one uttered a word. Nile was staring out the windshield. Her blank face was driving Joker insane on the inside. Not being able to tell if she was scared or pissed. Leah was trying to imitate Nile but wasn't like her. Leah was treated like a princess until she met Nile. Nile taught her that the world doesn't revolve around her. Leah dropped the princess act and pick up a rugged look. But some things never changed. Like being very Candor. You could always tell what emotion Leah was in by her face.
Joker's P.O.V.
I couldn't stand not being able to tell what she was thinking. I've never met a person who could keep a face like that around me. Emotionless. Shit. This will be good.

By the time we reached the hideout, Leah was quivering in her boots. Er heels. I think that's what you call them. Nile still had an emotionless face. I growled. When we walked upstairs, Leah was glued to my hip. For a reason I did not know. That's when Nile finally broke the dead silence.
"WHY THE FUCKING HELL DID YOU HAVE TO TAKE US. YOUR DEAL WAS TO KILL ME FOR DANI!! ITS NOT FUCKING FAIR!!" Nile spun on her heels and screamed. "I should of died. I should of. It should of been me." She muttered. But under just a breath. I felt Leah scoot in closer to me and give me a pleading look. So that's why.
"Sorry sweetheart. I'm the Joker. Prince of Crimes. I pull jokes. For a living. Oh come on you didn't expect that??"
"NO!!HELL NO!" She yelled and stomped over. I gestured over to the door next to me. Indicating that was her room. She yanked her door open and slammed it right in my face. That's when I felt beady eyes bore into me. I looked down and met eyes with Leah. She only said 10 clear words to me. For rest of this day.
"She will be the one to break you. I promise."
And with that I led her to her room.

As I was walking back I could here someone speaking. It was coming from Nile's room. I opened the door just a crack. To the point where I could hear the words clearly. She was singing. I had no idea what song but I thought it was amazing.
You've got me shaking from the way you're talking. My heart is breaking but there's no use crying. What a cyanide surprise. You have left for my eyes. If I had common sense I'd cut myself or curl up and die. Sticks and stones could break my bones. But anything you say will only fuel my lungs. Don't mind us we're just spilling our guts. If this is love I don't want to be loved. Your pollute the room with a filthy tongue.
That's when she stopped singing and laid down on her bed. And sighed. Heavily. I slowly closed the door and walked to my office. I sat down on my bed and fell into a dreamless and sleepless night.