"Yeah, I don't know if anyone's from exactly 1961. Except the people who actually live here, anyway." Sans takes a drink of soda, heedless of it still being morning. "If you want a world map, you can hit up the library. Just don't go around letting anyone who lives here know you aren't from here. Best case scenario is they think you're crazy, and you don't want to deal with the worst case."

Though this guy seems calm enough that might not be a problem. And really, it shouldn't even be Sans's problem what this guy does except it might reflect back on Papyrus.