Joker: "Well, well, if it isn't the Merc with a Mouth! Did you finally decide to join the clown side of life?"
Deadpool: "Hey, Joker! I thought about it, but I just couldn't pull off that whole 'insane clown' thing. My complexion clashes with green hair."
Joker: "Ah, but you've got the red suit going on. It's like we're in fashion competition, and I must say, I'm winning."
Deadpool: "Please, Joker. You've got nothing on my snazzy sword collection. They're like my little stabby babies."
Joker: "Stabby babies, huh? That's a new level of twisted, even for you."
Deadpool: "Hey, speaking of twisted, remember the time you gassed the city and tried to make everyone smile permanently?"
Joker: "Oh, the good ol' days! You know, you and I should team up sometime. Chaos and chimichangas, what a combo!"
Deadpool: "Hmm, tempting. But I'm not sure I can handle the smell of exploding pies mixed with your signature 'perfume.'"
Joker: "Come on, Wade! The world’s a stage, and we’re the stars of this twisted comedy show."
Deadpool: "True, true. But my show's got way more breaking of the fourth wall and pop culture references."
Joker: "Oh, please. I've been breaking the fourth wall since before it was cool. And as for pop culture, I AM pop culture."
Deadpool: "Fine, Joker, you win the 'I'm more insane' contest. But remember, I've got a self-healing factor that makes your scars look like paper cuts."
Joker: "Oh, Wade, you're such a party pooper. Let's agree to disagree, and by that, I mean I'll laugh maniacally while you quip incessantly."
Deadpool: "Deal, J-man. And hey, if you ever need a hand (or two), just give me a call."
Joker: "Likewise, Wade. But only if you promise to bring the chimichangas."
Deadpool: "You got it, Clown Prince of Crime. Catch you on the flip side!"
Joker: "Oh, don't worry, Wade. I'll be flipping right along with you!"