Well, that's a lot more inviting than Sans was necessarily expecting. He stares at Greg for a moment like he didn't quite hear what he said before it actually clicks.

"Huh? Sure, sure."

He seats himself, but one of his knees is vibrating a little with excess energy. He taps his thumb against his lips in a way that seems to him like it would make more sense if his face was different? Except that's a really weird thing to think. Except, given how high he is at the moment, he's not as inclined to let the thought go as he would otherwise. Pot has a way of making a person fixate.

"Do you ever just...do something on reflex, but then realize how weird it was? All the time, probably. Everybody does that. Around here, anyway." He stares off into the night, forgetting about his blunt for the moment. His mind seems to be moving too fast and in all manners of directions for him to necessary wait for Greg to confirm rhetorical questions.

"Been feeling that a lot tonight. Been asking myself a lot of questions. Been trying really hard not to think about it."