Humans prefer living in places where it's always changing? No wonder Frisk was able to traverse the Underworld so quickly. They were already used to a constantly changing environment...

Papyrus considers the amount of snow actually on the ground here, and his grandiose plans, and realizes they'll need more. So he heads to the top of the slope, gathers a big ball, and guides it down. A few bones stopping it every couple of feet handily keeps it from gaining too much momentum.

He continues musing aloud, "I can only imagine how big the average human's closet must be... Should we have moved somewhere with a bigger one???"