A/N: BABY FRISK IS SO KAWAIIII!!

Sans opened the door one handed, seeing as the kid wasn't going to let go anytime soon, and walked in awkwardly with his arm over his shoulder. Closing the door, Sans quickly snuck into his room and managed to not get noticed by his brother, who was currently signing at the top of his lungs.

"Thank god for sound proof rooms, huh kid?" Sans whispered as he shut his door just as quietly as he opened it and locked it tight. The kid shifted in his hood and stood up, only the midways of her arms showing. She gently started patting his head, making small laughing noises as she did so. Once again, Sans flinched slightly only to laugh in suprise.

"You're full of suprises, aren't ya kid?" Sans asked pulling the tiny human out of his hood. The kid smiled at him while making happy noises and Sans shook his head in amusement.

"Ok now I'm gonna set you on the bed ok? No running off." Sans instructed, gently setting the kid on his bed. The tiny human rolled around gently, making random noises as she did so.

As he stood back up, a crinkling noise sounded from his hood and Sans blinked in suprise. Reaching back, Sans pulled a crumpled note out of his hood and unfolded it, reading quietly to himself "If you're reading this, then you found my no good reject of a kid. I didn't want her, and hopefully she died on impact, so I don't have to deal with the brat. If she didn't...you keep her. I don't want to be know as the mother of a monster lover. All she does is give everything to the "poor monsters"...I know she's a baby, only 1 and 1/2 years old, but don't bother giving her food. She'll just eat a bit then, somehow, find a monster without moving then the brat'll give your food away. Just make sure if you don't want her to die, feed her at least once every two weeks. By the way, her name is Frisk."

Sans felt horrified as he read the letter. Who could do such a thing to a two year old baby?!

"Dang kid, your 'mom', ain't a good one....so your names Frisk huh?" He whispered and Frisk gave a clap at her name. Chuckling, Sans went over at sat on the bed, making sure the kid wouldn't fall as he then laid down. Frisk cuddled up on his chest and Sans gave another chuckle before wrapping an arm around the kid so she wouldn't fall off. Both sighed before falling into sleeps warm embrace.

0-0-0-0-0

Sans woke up to his door open and his arms empty. Panic filled him, but the sleepiness would let he understand why before his brothers loud cry of "NYEH HEH HEH!!" filled his room.

"Shit shit shit shit..." Sans muttered repeatedly under his breath as he scrambled off his bed and rushed into the kitchen. Frisk was on the floor, giggling as Papyrus quickly pulled a bone out and held it, ready to attack.

"PAPYRUS, DON'T!" Sans shouted as he rushed over to Frisk and put her safely back into his hood, the little human patting him softly again.

"SANS?! WHAT ARE YOU DOING? YOU STOPPED ME FROM FIGHTING THE HUMAN!" Papyrus said, stepping towards Sans, who backed away while saying "Papyrus, this isn't a human to fight."

"OH BUT IT IS! I SENT UNDYNE A PICTURE AND SHE SAID IT WAS A HUMAN! SHE'S COMING OVER TO HELP!" Papyrus said proudly, and Sans cursed loudly, causing Frisk to giggle some more.

"Hey don't repeat that kid." He instructed and Papyrus looked confused and asked "SANS, WHY ARE YOU NOT FIGHTING THE HUMAN?"

Sans sighed and said "Look at this Pap."

Papyrus grabbed the note and read it, very loudly, and had tears, somehow, rolling from his eye sockets at the end.

"HOW COULD A HUMAN BE SO CRUEL TO THEIR OWN CHILD?!" His brother wailed and Sans shook his head and said "No idea buddy."

Frisk giggled loudly, drawing both brothers attention, and patted Sans head with more force, but Sans knew she wasn't trying to hurt him. Papyrus's face softened and reached a finger out towards Frisk, who grabbed his brothers finger with surprising force. Papyrus had a panicked look on his face and Sans gave a laugh, causing Papyrus to relax. Sans watched as Papyrus smiled down towards Frisk who made a gurgling giggling noise and Papyrus screeched out "SANS THIS HUMAN IS ADORABLE!!"

"Haha I know buddy." Sans giggled, and Frisk giggled again. Sans pulled Frisk out of his hood and held her gently, remembering how he had to hold Papyrus when Papyrus was this age, though Frisk was much much much tinier then Papyrus.

"SANS..." Papyrus said in concern, and Sans looked from Frisk, who was patting his face now and said "Yea Papyrus?"

"WHAT ABOUT UNDYNE? SHE'LL BE HERE SOON...." Guilt was evident in Papyrus voice as he stared at the smiling human and Sans said "call her back, tell her it was a lie."

"THAT COULD WORK!! I'M GLAD THAT I, THE GREAT PAPYRUS, GAVE YOU THE INTELLIGENCE TO COME UP WITH THIS PLAN!" His brother exclaimed, quickly grabbing the phone and dialing Undyne's  number.

"UNDYNE! THIS IS I, THE GREAT PAPYRUS, AND I HAVE TO TELK YOU SOMETHING!"

Sans listened in as Papyrus explained that's he's seeing a human "WAS A CLEVER PRANK MADE BY ME, THE GREAT PAPYRUS!"

Papyrus was silent for a moment before protesting "BUT YOU HAVE NO NEED TO DO THAT!"

The line must have went dead, seeing as Papyrus gave him a distressed look and said "UNDYNE IS STILL COMING TO OUR HOUSE."

"Well shit." Sans cursed, and gave a slight start as Frisk suddenly started to cry, a low and quiet sound that sent the brothers into a panic, both searching for something they could feed the tiny human.

"TRY THIS SANS!" Papyrus exclaimed while shoving bread into Sans hand. Sans nodded his thanks then gently handed pieces of the bread, after ripping them up, to Frisk, who shoved them in her mouth like she was starving. A sense of dread filled Sans but before he could say anything, a knocking echoed through out the house, along with a yell of "OPEN UP PUNKS!!"

Both brothers looked at each other and said "UNDYNE!"