Sans sure hopes John doesn't expect him to keep being so helpful, but hey, might as well start off on the right foot. For Papyrus's sake. Sans holds out a hand for a handshake, and once again regrets all of his pranking stuff is at home. "Sans." He waits just a beat before he drops the really funny thing: "According to this place, you're my brother's kid, so I guess that makes me your uncle."