Harley: Look, Bats. When I was a doctor I was always listening to other people's problems. Then I met Mister J who listened to me for a change and made everything fun.
Batman: You think it's funny when he hurts people?
Harley: It's just a joke.
Batman: Hope you're still laughing when it's your turn.
Harley Quinn: (The Joker is ready to leave Gotham to the fate of the bomb he planted, but Harley wants to know...) Well, what about all our friends? Two-Face, Poison Ivy, Lizard man, puppet head, and...
Harley Quinn: (After arriving at the Jokers old hideout) How do you like our ha-hacienda?
Harley Quinn: Did you see the way I handled those creeps? Pow! Bam! Batgirl, eat your heart out!
Joker: You really should loosen up, dear, have a laugh now and then.