Maybe the girl has some sort of medical issue that makes it difficult for her to control her bowels sometimes. In the class, she starts to feel the urge and tries her best to hide it. She fidgets in her seat, but the desperation keeps growing. As she's about to give a presentation, the stress makes it impossible to hold it any longer and it happens right there in front of everyone.
One possible plot could be that the girl has been holding it in all day due to a busy schedule and not having a chance to use the restroom. In class, she starts to feel really desperate as the teacher is not allowing anyone to leave. Eventually, she can't hold it anymore and has an accident, which then leads to her facing embarrassment and the reactions of her classmates.
It could be that she ate something bad right before class. As the class progresses, she feels the discomfort growing rapidly. She tries to ask the teacher to go to the bathroom subtly but the teacher misinterprets. The desperation becomes so intense that she finally poops in class, and then she has to deal with the aftermath, like cleaning up and the stares from her classmates.
Well, this is a rather strange topic. But if we were to consider it in a non - inappropriate way, perhaps the 'desperate' part could mean she's in a situation where she's lost control due to some extreme circumstances like being trapped in a very difficult place for a long time without access to proper facilities. However, fanfics with such topics should be written with a lot of care to avoid being offensive or inappropriate.
Avoid using overly graphic language. Instead of going into the gory details, you can imply what's happening. You could also add in elements of how the classmates respond with kindness and understanding rather than just shock or ridicule. For instance, one classmate could offer her a jacket to tie around her waist while she tries to deal with the situation.
No. It's not appropriate. This type of topic involves very private and often embarrassing bodily functions. Writing about it in a fanfic can be seen as vulgar and disrespectful to others.
Well, perhaps a girl had some stomach issues that suddenly came on during class. She thought she could hold it until the break but unfortunately couldn't. This led to her pooping her pants in class. It was a difficult situation not only for her but also for those around her who might have noticed and didn't know how to react.
One reason could be that she is too young to be potty - trained. Babies and young toddlers don't have the control over their bowel movements yet. So it's normal for them to poop in diapers.
It might be due to a lack of access to a toilet in time. She could have been in a situation where there were no bathrooms around, like being in a long line outside a public restroom and not being able to hold it any longer.
A little girl was napping. When she woke up, she had pooped in her diaper. Her mom heard her fussing and came in. Mom saw the situation, quickly got a new diaper and some wipes. Mom changed her diaper while the girl babbled happily, not really understanding what was going on.
Hardly any. Usually it's just an embarrassing situation for the girl involved.
Medical emergencies can make a girl desperate for money. If she or her family member is seriously ill and they don't have insurance, she has to find money for the treatment. Also, if she wants to start her own business or pursue a particular career path that requires a lot of investment, like becoming a fashion designer and needing money for fabrics and equipment, she will be desperate for money.
One possible plot could be a new student joining the climbing class. They are initially shy and intimidated by the more experienced climbers. But with the help of a friendly and skilled classmate, they start to improve and gain confidence. Eventually, they both participate in a big climbing competition together.