It really is amazing how easily the tones of Kit's amusement can settle his companion's disposition. A dare like that would typically have flared his temper almost immediately, resulting in his breaking into a sprint wordlessly at best. Instead Vincent merely shakes his head, letting out a noise that sounds faintly admonishing.

"As if I'd fall for something so obviously. You're not ducking out that easily." What better way to meet that smug grin than by spinning his own words back around to make his companion appear to be a coward? He wasn't willing to allow them to tax themselves unnecessarily before the fight, but such an annoying challenge couldn't go without comment.