Kids, don't eat worms you find laying around or you'll poop your guts out like this stupid creature.
Her shit didn't come because of that worm she ate (actually, the worm incident related to little Maricha's murder came several days before Reimyu's encounter with Miss Razortooth), but because of the severe distress she suffered upon seeing the pet Myon, cared for as if it were a real princess.
Up until that point Reimyu still believed in her position as a princess (even after she has been stuffed in the yukkuri-exclusive recycle bin), and the sight of the Myon caused a severe existential crisis in her, which became stress and diarrhea.
You can return to post #69767 for a proper explanation
Oh so yukkuris also have their life flash before their eyes before death, interesting
However, the reality is cruel.
In the end Reimyu's life demised, with only the miserable, poor memory of "eaten a earthworm" accompanied.
If she didn't look down upon her little sisters and did rub-rub with them,
if she didn't curse the foolishness of her father and instead act spoiled like a baby yukkuri normally would, maybe she could have some more memories that can take it easy.
And she would probably have a much better ending when she greeted her death.
Reimyu saw a glimpse of her whole life the moment she died.
It was nothing more than the memory of "eaten a earthworm", though.
And at that moment, Reimyu died.
Together with a extraordinarily loud spurting sound, Reimyu's pastes core was defecated.
"Yunn!"