It was Winter vacation. You were gone for walk with your uncle, a.k.a Sans since you done all homework. You were obviously wearing identicall but for your size Sans's fully zipped jacket since Sans and Toriel doesn't want you to get cold. For some reason Sans has theoretically infinity of them in his wardrobe for some reason. Anyway as you both came to bench, Sans asked you in calm tone

Sans: have anything in your mind, buddy?

You looked at him and since you're child. Welp, you felt like he give the best hugs when he wears his iconic outfit as you said or flirted tbh...

he looks huggable

Sans replied with calm tone

Sans: 'scuse me a sec.

He walks off bench and looks away from you, hiding his face with both of his hand as blue blushes brightens on his face while his skull sweats. Although this reaction seemed little out of character for him to react but who cares lol.

He then came back as his blush completely gone. Although he was little flustered as you see a little sweat on his skull as he sits down on bench closer to you, his hands back into jacket pocket as he closed his right eye sockets. He says in laid back and nervous tone

Sans: heh. thanks.