Chara, Sans, and Papyrus were all sitting down and playing some Uno. Suddenly, Chara had a question.
"Sans, why do you speak in all lowercase? And Papyrus, why do you speak in all uppercase?" She asked.
"well, kiddo, i stole all of papy's lowercase letters when he was born. i gave him all my capitals," Sans said.
"YES, HUMAN! I HAVE TO LOWERCASE LETTERS TO SPEAK IN BECAUSE OF MY LAZYBONES BROTHER!" Papyrus yelled.