First story! *trombone fanfare*
"SANS?" Papyrus called out. "CAN I ASK YOU SOMETHING?".
"come up here."
"SANS, GET OUT OF BED AND COME DOWN HERE, YOU LAZYBONES! THIS IS IMPORTANT!"
"if it's so important, then why don't you come up yourself?" Papyrus rubbed his head. Normally, the headaches that appear as a result if dealing with his brother started at about noon, seeing as that was when Sans normally woke up. Papyrus stomped upstairs to his brother's room.
"ALRIGHT SANS. I'M HERE NOW. CAN I ASK YOU A QUESTION NOW?"
"you know, i know that you seem angry, but to me it's questionable."
"SANS!"
"i just hope answering your question isn't a big t-ASK."
"SAAAANNNNS!"
"alright bro, ask away. just don't make it be something half-ASKED." Papyrus briefly considered stepping out, but he decided against it. He had to know.
"SANS… WHAT IS A HUMAN EXACTLY?" Sans looked at him before making his wide grin even bigger. He began to chuckle.
"SANS, THIS IS SERIOUS." Papyrus complained as Sans rolled around on the floor laughing. Sans straightened up as he let out a few more chuckles.
"alright then. let's get started." After getting Papyrus to borrow a portable whiteboard from the library, Sans began his lesson.
"now as you can see here on the board, a human doesn't have bones or anything like we do. they're just lumps of fat with internal organs that are somehow molded to look like they do."
"WOWIE, REALLY? I FEEL SO WELL INFORMED."
"hold on, i'm not finished. their heart is used as a storage space for determination. there's also a lump of weird matter inside their heads that doesn't do anything as far as i know."
"HUH. IT REMINDS ME OF YOU, ACTUALLY. WELL, THANK YOU FOR EDUCATING THE GREAT PAPYRUS ON THE ANATOMY OF A HUMAN! OF COURSE, I ALREADY KNEW EVERYTHING, I WAS JUST TESTING YOU." Sans chuckled.
"yeah, of course you did." Papyrus left, but immediately ran back.
"THERE'S A HUMAN! AN ACTUAL HUMAN! I WILL GO SURPRISE THE HUMAN WITH MY KNOWLEDGE OF THEM!"
"yeah, you go do that. i'll just stay here."
"OH NO YOU DON'T! YOU'RE COMING WITH ME!" Sans was dragged down the road to witness one of the funniest sights he ever saw.