Su probably could have come up with a comment about him being a pacifist Batman, as well as a few thoughts on what superhero she'd be... but that little 'mm' noise he'd made had been incredibly distracting. And then, of course, his fingers were touching her chin, and she had a moment where she realized just how close their faces were. And how his hair was sticking up in a way that kind of made her want to run her fingers through it...
And then he leaned in and gently bit the tip of her nose and their faces were very close. "Face taste is good," she murmured in response, a grin tugging up the corners of her lips. "But yes. You definitely need at least three samples... to make just a vague decision."