Well, we actually have no idea about his mindset, considering the actor and Oscar-winning filmmaker has yet to comment publicly about winning the role of Caped Crusader in the Man of Steel sequel.
No, we mean literally pumped.
Affleck brought the gun show to a gas station yesterday in L.A., not being able to help but show off his biceps in a T-shirt.
But while the Argo star still has legions of Batman fans, DC Comics purists, Daredevil haters and plain old devil's advocates to convince, he's already got the support of Wayne Enterprises. Er, Warner Bros.
Affleck is "perfect for the vision" the studio has of Batman as "kind of tired and weary and seasoned," Warners CEO Kevin Tsujihara told investors at the Bank of America Merrill Lynch Media, Communications and Entertainment Conference, per Deadline. "We think it's going to be huge."
If it's anywhere near as huge as Affleck's arms...box office gold.
Hugh Jackman, who knows from superheroes (albeit the Marvel variety), also recently threw his support behind Affleck in the face of all the casting controversy, telling MTV News that he knows his fellow star will "relish the opportunity to go and crush it. I have no doubt he's going to crush it."