"You dirty brother killer." San's eyes started glowing a bright blue. You just laughed. You knew you could defeat him like his brother.
"You're going to have a bad time." He said and then smirked. "But, I'm going to have a good time."
You avoided his gaster blasters. But you suddenly got knocked over by a bunch of bones. You kept fighting until you were down to one hp. You were panting and crying. You were regretting your choices, you wished you could just reset, but you couldn't right now. Suddenly, you start shrinking. Sans came over to you with a smile that was creepier than usual.
"And now, I'm going to have a great time~" He said as he picked you up with both hands (you weren't that tiny). He showed his glowing blue tongue? You didn't even know he had a tongue. He opened his mouth wide and pulled you closer.
You started crying "NO SANS! PLEASE DON'T EAT ME! I SWEAR I'LL CHANGE. I'LL RESET EVERYTHING AND I WONT-"
He just laughs "It's too late now, kiddo."
He puts your head in his mouth. You face covered in saliva. Suddenly, you go even further down him. Your face in his throat. His wet and slimy tongue was tickling your stomach. You started laughing.
"S-Sans, S-stop!" But he didn't listen and shoved you down further.
Now all of you was in his throat. Suddenly, you felt yourself slipping down.
"NO!" you screamed and you tried to grasp onto his wet walls, but no luck. You kept sliding down.
Finally, you reached his stomach? You didn't even know he had a stomach. It was glowing blue. It was quite big, but you didn't shrink down that much, so their was barely room for you. But, for whatever reason, it felt oddly comfortable and warm. But that still didn't stop you from panicking.
"Sans, why would you eat me?! Now I'm going to die!" You cried.
"Oh, you're not going to die~" He said in a dark voice. "You're going to stay in there, forever, since I can't digest a human. This way, you can't kill anymore. You'll have to listen to all of my puns for the rest of eternity. That is your PUNishment!" He laughs.
"Sans, I swear to god!" You were angry. You had to stay in here forever and listen to his puns forever.
But, maybe it wouldn't be that bad, you eye closed, as you felt his stomach swishing around as he walked. It felt almost like being rocked to sleep. You slept in the warm and wet cavern.
~bonus~
"Hello, sans...." Asgore said. "Why is you stomach bigger than usual."
"Are you calling me fat?"
"Oh no, I was just wondering....also why is your stomach....squirming?"
"Oh, it was just something I ate, that doesn't quite agree with me, that's all."
