Toriel: //reading to Frisk, stops// Sorry, my child, but I need to use the restroom.

Frisk: //puffs cheeks// But, Goat Mom! We're almost at the ending!

Toriel: I know. Don't worry, I'll be quick! //takes Frisk off lap and goes to bathroom//

Frisk: //crosses arms, pouting// ugh.. 

Toriel: //when finished comes back// My child, I am do- ...

Frisk: //had left ruins with book//

Toriel: ;-;

It's like when a dog or cat sits in your lap and you get all comfy but accidently shift too much and they get up and leave