Fate comes in all shapes and sizes and...ages?

Oh baby don't cry

The trip was silent to say the least,the baby too focused on Sans fluffy lining of his jacket hood and Sans was busy figuring out how to carry out the task of getting it home. 

' I gotta stop calling the kid " it " and "them" He thought to himself before looking at the child more closely, not that he really cared what gender it was he was just getting tired of using the same titles and was suddenly curious. 

He cringes and shakes his head,

" I ain't checking till I have to so forget that." He sighs and looks at the baby, pink chubby cheeks and a bit of short whispy brown hair barely past the ears showing they couldn't have been more than seven months old. 

The clothing did little at all to clue Sans in as to what gender they were since it was just a plain red shirt too big for their age draping over their knee caps hiding a plain white diaper underneath.  

The baby squirmed in his grasp, trying to crawl over his shoulder making him mutter, 

" Whoa hey hey, easy there kid gettin' frisky huh?" 

For some reason unknown to God his brain clicked together a name and out it spilled from his mouth, 

" Frisk." 

The baby paused in what they were doing and slid back down into his arm and laughed patting his cheek bones roughly. 

" Hmm, Frisk huh? Alright then Frisk. Though personally I would go for Annoying Twerp" 

He smirks despite himself as they giggle innocently, patting his cheek bones. Sans felt his cheek bones redden as he realised what was happening to him before returning to a sour look and firmly pushed Frisk's hands away from his face making the baby tilt their head in confusion, he seemed happy a minute now he is grumpy again.

Sans ignored their confused look and continued onward  through the snow drifts, Frisk however was DETERMINED to make Sans smile again. 

Frisk raises her hands and thrusts her fingers into his mouth, roughly pushing the corners upwards catching Sans by surprise and he gags, wriggling his head away from her grasp.

" Agh! What are you doing nutso?!"  He splutters and wipes his mouth with his sleeve in disgust and shudders. 

" Don't know where those hands have been, pull that crap again and I'll bite ya!" 

Sans threat was ignored as Frisk continues to push up at his cheek bones till he slaps her hands roughly away from his face as he roars,

" STOP IT!" 

Silence is thick in the air  as Sans pants  heavily through his nostrils, he looks down at Frisk before remembering his hand is made of bone. His eye sockets get wider and curses when he hears a soft whine. 

" Shit, no no no no. Kid no, its okay you're fine alright?" 

He panicked when his plea was answered by a long heartfelt wail out of Frisks mouth, fat tears running down her reddened chubby cheeks making him bounce her up and down desperately.

" Sssh shut up, come on shut up already. " Sans begs but to no avail while he watches helplessly as Frisk cries holding her injured hand 

He reels back everything he remembers about when Papyrus was little and can only remember that his parents took little to no interest in him, only caring minimally for his necessities. Still he remembers that using softer tones helped sooth them,so through clenched teeth he uses his best " soft voice".

" Ssh, don't cry, it's okay, you'll be alright ssh."

Sans listens as the cries slow down while he continues to murmur in her ear in soft whispers, rocking her side to side in his grasp. He hums softly, making her relax in his grip and him to nearly close his eye sockets from the soothing motion. He shakes himself awake,trying his best not to disturb Frisk as she closes her eyes asleep. 

Sans couldn't help but feel, warm inside. He immediately shuts that feeling out of his system and sighs heavily out of confusion.

" Ah kid, what'er you doin' to me?"