[ He's so goddamn serious about this, she can't help a snort of laughter, which she quickly stifles behind her hand. It's hard to remember, even in her world, there are still so many people without running water... ]

[ ... This is also an incredibly weird sore subject to have, but that's what laughs are for, aren't they? ]

It goes to the sewer, usually. If it ends up in someone else's house, that's a way bigger problem. [ She pauses. If he's marveling at the concept of a flushing toilet, he's not going to know what a sewer is... She gestures unhelpfully. ] It's a tunnel, like a big underground river. All the houses are connected to it.

[ Can they please change the subject. ]