[ Sans was minding his own business when he heard shuffling in front of him. He instantly tensed up and started shaking. He looked up and saw it was a human.. ]

"..."

[ He completely froze, mind racing with fear and thoughts of this or that, wondering when Papyrus will show up and take care of this situation for him. He looked at you, quite petrified and managed to stammer out a greeting. ]

"a-ah- uhm.. h-hu-human.."

[ He was trying to sound threatening but failed miserably, his head racing with anxiety. ]