Jen sat there, trying her best to pay attention to class while the pressure in her three asses never let up. She continued to shit across the back third of the room until another student behind her thought to speak up, angry that they were becoming coated in Jen's horse shit.
"Jesus Christ! Give some to the rest of the class, will ya Jen?" she blurted out angrily, her notes ruined.
Jen froze in panic. That was such an open ended thing to say, and she was terrified of how the curse would interpret it. And interpret it the curse did. A tingle began in Jen's waist again as she felt 5 new buds sprout from her waist, at the same level as her other asses. She felt her spine shift from horizontal to vertical as her hips changed, allowing her to stand as if she was some kind of crazy centaur and not a girl saddled with the ass of a horse (although she was soon to be saddled with 8 of them). The buds grew and grew, soon becoming full-fledged horse asses just like her previous 3. She looked down at them, finding it somewhat disorienting to see an ass on the front of her body, let alone three others! Not even mentioning the two to each of her sides, either. The 10 simultaneous clops marked the end of her transformation, her new asses soon ready to fire.
She instinctively raised her 8 tails, and soon the pressure returned, so strongly that she was barely able to think. She began to coat the entire room in her shit tsunami, much to everyone's displeasure. Jen wondered how she could fix this...