you were a god/goddess of chaos, you went down onto earth with a human disguise and went over to a city, got a house, and slowly planned on how to destroy this city. You were walking trough the sidelines in the day, getting some fresh air, you were looking at the ground, casually stepping on some ants, before you bumped into someone, you fell on the ground as you swore you heard some bones rattling when you bumped into that person... you looked up and saw a living skeleton monster who was pretty short, Sans, you could've killed him, possessed him, manipulate him, and other evil stuff, but you didnt, you decided to be "friends" with him, so you could use him for your own benefit, so you became "friends" you’ve learned some things about him and when he introduced you to his younger brother, Papyrus, you immediately wanted to genuinely be his friend, so you were friends with Sans and Papyrus, the skeleton brothers, you did genuinely kind of liked them (mostly Papyrus) but that didnt stop you from causing chaos, but meeting them both made you downgrade on your "destroy the city" so you decided to just cause some chaos and pranks, and by "some chaos and pranks" i mean, arson, blackmail, property damage, murder, and other stuff

it was present day, Sans and Papyrus were just walking, wanting to meet up with you, but as soon as they saw you, you were sitting on top of a pile of corpses with blood all over your body, while you were in your true chaos god/goddess form, they were shocked

Papyrus : w-what...

Sans : too stunned to speak