actually, any yo mamma joke would probably making batman cry, what with his mom being dead and all, and being half the reason he became batman in the first place.
Seeing Batman's intelligence and the fact he will play dirty, I see him taking Superman to town with a low "yo mamma just a fat hick cracka!" joke in the second round.
Superman would counter with "Shhhiiit...yo mamma dead! She dead, son!"
"This coming from a millionare who sits in a cave all day with a kid and a butler trying to solve crimes to make up for the tradgies in his life??!? Give me a break"
Batman wins this hands down.
I mean, his whole gimmick is getting inside peoples heads and manipulating them.
He would look at Clark, review the history, and tear him apart.
"Look at you, Supergod.
But doesn't it bother you, that soon enough, you'll be all alone? Separated from the people who made your life worth living??
Lois? Dead and gone.
Dad? He's already food for worms.
Mom?? Poor, old hick Mrs. Kent. She aged and died, while you stayed young. And then the stress of the secret coming out........That she raised Superman.
Everybody you love is going to leave you Clark!! And there isn't a damn thing you can do about it!
Strength and durability won't cut it here, beefcake!
You maybe functionally close to immortal, but i won at life."
Btaman wins, he managed to piss off Hal Jordan enough to get Hal to punch him.
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hal jordan is insane... i think a child could upset him on a typical day... superman is usually the rock of the justice league... batman has the edge but he will be there all day with superman