[It's the seem to be, as he's only pretending to take this well, keeping his calm through all of this-- it's what he does. Only later on, in the privacy of his hotel room, he can properly freak out about all of this.
But for now, he chuckles.]
I can see why. But when you've been through an alien invasion that was stopped by a group of superheroes, among them a man thought to be dead 70 years ago and a god from another world, there's not too much that will surprise you. Not even the name of a fairy tale princess.
[Because if aliens are real, if other dimensions are real, if secret ninja organizations and gods are real-- why couldn't fairy tales be?]