The monsters in Grillby's nearly cooked you alive. Luckily, you were able to flash the second freebie that you had in time to be saved. After the monsters through you out the window Sans teleported to you to mock you.
Your HP was frizzled to a fraction. Your body stings as blood forces itself through cooked arteries. But miraculously, you are alive. After rising to your feet, Sans starts to direct you on where to go and you thank him for saving you.
"Forgeddaboudit. Deal's a deal. You gotta get out of- hnn--!!"
Sans's stomach grumbles and growls with hunger.
"Ssshhhhhhhhit..." He's shaking. What's wrong with him? "I'm not hungry. I'm not hungry. No food here... I'm not eating a human. I'm not... I can't..."
Wait. Your cooked flesh. He must be triggered by it. He said he'd never eat a human, but-
-how long has it been?
You look up... This cannot end well.