Fortunately, this isn't Kylo's first time being caught in ignorance of some idiom or other from a world beyond his experience, and it helps that nobody is outright laughing at him— he can breeze past blithely as if he'd intended to be mildly amusing all along.

Which he does. His expression adjusts slightly as he grasps what Stephen is actually saying, mouth tugging at the corners as if it can't decide which kind of curve it wants to pull into. He doesn't even attempt to hide his dismissive contempt for the perils of seafaring.

"Unless our journey to Solvunn requires a cold jump to hyperspace or complex, multiaxial maneuvers at sublight speeds, I won't be turning green. No. I don't experience motion sickness in realspace."

That said, he glances back towards Ronan. Thrillseeking in a fast car isn't exactly equivalent to lurches in roll, pitch and yaw.