Maybe he's just officially been in space too long that messing with the gravity controls is within the realm of if not normal, at least possible (and kind of charming). Or maybe he's just officially missing home and all the comforts that come with it. Or maybe-- maybe it's the part where he's pretty sure Kate knows, where even he's not stupid enough to pretend she doesn't - and she seems kind of okay with it.

(That shouldn't be a good thing. It should worry him.)

Whatever it is, it prompts an effort out of him: "So, uh, about last time--"