[The fact that Sans didn't react badly to his joke keeps the grin on Rick's face, and he takes the skeleton's hand happily.]

Rick Sanchez.

[He'll give the hand a single shake before taking it back, and he gestures with one of his hands towards the.. general vicinity of the ship.]

So you been here long? O-or did you get the pleasure of being dragged onto this ship in the middle of this... whatever's been going on here?