[Verse 1: Deadpool]
Look, it's Marvel's main mercenary here to make another mess
And about to flip the kill switch, son, 'cuz Deaddy knows best (trust me)
From what I hear you tend to get a bit unruly
I'll tame you with a machine gun; is that animal cruelty? (I don't think so)
I think that you're the crazy one to think that you could handle me
It's total annihilation, well, kinda like your family tree
There is one mystery that still needs solvin'
Who should I send your head to? Alfred or Robin?

[Verse 2: Batman]
(Look) I'm just getting started, but it's already over
Check my back issues, I already killed the Joker
This red clown wants to face cold justice
And this'll be your darkest night like the winter solstice
I put my city on my back, no powers
And judging from your stench, your biggest cause is no showers
I anticipate this will be our one and only meeting
Because you can't regenerate from a verbal ass beating

[Verse 3: Deadpool]
You wanna talk beat downs? I'm a weapon X survivor
I'll dice you into an entrée then blow you up like Macgyver
A comparison reveals solidity vs fragility
So tighten up your belt 'cuz you'll need every utility
Your secret identity just means that you're a two-faced
Penguin-suit-wearing wannabe and I've got a distaste
For billionaire bitches, take your mobile and your kitty
But I wouldn't be caught dead in Gotham Shitty
[Verse 4: Batman]
Trashing on Gotham and calling me a phony?
I know you've got some screws loose, so I'll try to speak slowly
You experiment gone wrong and worthless survivor
And I'll serve you in this battle and then sell you back to Stryker
Regenerative Healing really will not be a factor
When I lock you in a dark cave from here to ever after
The Dark Knight Rises and the Dark Knight Returns
The Dark Knight will flame you worse than your third degree burns

[Verse 5: Deadpool]
You attacking me is nothing more than a bad itch
But I got your next movie title: Rise of the Bat Bitch
I'm slicing and dicing, I never look when I'm firing
But the bodies are piling up 'cuz this bat is expiring

[Verse 6: Batman]
You think you're clever, well how about I sever
Your head from your neck; and we'll see who rhymes better
I'll bury you alive and I'll wait for your screams
I'm the Dark Knightmare of Deadpool's dreams