Vincent talks with kids a lot. Now that he thinks of it, this guy kind of talks like a little kid anyway. And they aren't slurring or anything, so it's probably...

Immediately forgetting what he was thinking, at the sudden gasp. He looks surprised, belatedly leaning back a bit-- "What?"

He's already reflexively reaching up with one of his giant hands, feeling clumsily for what he thinks is a finger being pointed right in his face. The rest of his thoughts follow a beat later, "Oh, you mean... my eyes?"