The situation feels familiar from the first moment Sans finds himself within it. The feeling of deja vu, the strange distance from his life in Vista...the fact that he's a skeleton again. It's all seems very similar to an experience he's had before, which in itself is a familiar feeling of nostalgia. He doesn't quite remember the first time he found himself in one of these dreams, but it's close enough.

Enough has happened in between that now, instead of baffled and only slightly put out, he is legitimately pissed off. He regards his surrounding with a feeling of disdain, like it leaves a bad taste in his mouth just by existing.

This time, there is no snow, or frosted subterranean trees. Instead, there is a vast stretch of laboratory space - a sight that is familiar yet foreign all at once. It isn't the kind of science he studied in university before dropping out, instead its of a distinctly arcane variety, like the sorts he's been gradually remembering over time. He could probably even name what a few of the devices and formulas are for. He knows what some of the mysterious looking scripts scribbled on boards and papers mean.

He just doesn't care. He doesn't want to be here. He feels like the entire place is haunted, whether or not it only exists inside his head.

There's no one else around, so he wanders for a while, in his lab coat and...somewhat misplaced slippers. When he realizes that its not really possible to find his way out, he just starts pushing things off of counters with a dull sense of amusement, much like a cat would. Will anybody react if he dumps this bottle of crap everywhere? Well, how about this one?

He manages to be pretty grim looking, even while grinning toothily the whole time. It's a talent of his, being a skeleton.