"Some prize," Bruce mutters, because he absolutely doesn't see himself that way and can't imagine that Tony's doing anything other than giving him a hard time.

Then he's wriggling away from the hand going down the armor because wow, that's weird. "Tell me again why I'm wearing armor now? Can't we save that for when the feces flies?"

He's not arguing against the armor at all because there will be no Hulk on this getaway, but this seems-- "It's premature, and why are you shoving chocolate in here with me? Isn't that a terrible idea? And get your hand off my ass."

The last is just to get a little of his own back, since Tony's not actually near his ass.