[Rosen has a sense of what Sans is trying to get at. As cool-as-a-cucumber as the skeleton may seem most of the time, there are hints that he's keen to know what, if anything, Rosen remembers of the previous night.

The truth is not as much as he'd like but also not nothing. But he's keeping mum on that for the moment.]

You did indeed. Despite my babbling. I'm amazed you had the patience for it. Most wouldn't.