Toriel gazed  at the mess of blocks that her child had formed into a square around them. Squinting concernedly, she spoke to the face that peaked out of the small hole that was left in this 'fort' (as they had called it before) they had made; 
"My child, what are you doing?" Toriel asked them, seeing Frisk smiling proudly.
 "This is my new house, and I live here now!" Frisk said as they seemed excited.
"How are you to obtain nutrition? How are you to rest in such a small vicinity? My child... This is not a suitable home!" Toriel responded, panicking.

A light shone, an old disco ball that Asgore had found and given to Frisk as a present being the source of light in their fort.
"This is my night light," Frisk said, proud.
"And as for nutrition, you can slide f–" Frisk was cut off.
The fort was shaking.
That's when Asgore came in and tried to fit into the fort, pretty much wrecking it. It really wasn't for Toriel's relief, either.

Silence filled the room as Frisk just gazed in his direction, Toriel sweating at the mess it had made. Frisk usually didn't have such a mess of toys around, so...

"Please move aside, both of you. I'll clean this up and make us tea after this." She said, looking at them with a soft and kind smile.

Asgore made no argument, knowing that he knew what would make her mad. But Frisk began to assist the goat in cleaning up, in the process making a bigger mess.

Toriel still appreciated the effort.