I've posted many stories here, and
https://umd.net/stories/i/katies-cruel-and-humiliating-punishment/return/%2Fprofile%2Fi%2Fmrwetshirt%2Fsection%2Fblogs%2F
has received over 1,000 views.
In this story, Katie is required to attend gym class, which she usually manages to avoid. Her gym skirt, polo top, and gym knickers are still in pristine condition. The gym teacher has a malign jealousy of Katie's academic prowess and shows no sympathy for Katie's genuine deep-seated fear of vaulting the horse. Katie is accused of showing wilful disobedience and is to be punished.
The gym teacher is inclined to send Katie for an extended cross-country run, but now that the rain has stopped this is not punishment enough. But the showers are cold.
Katie is subjected to a prolonged freezing cold shower in all her games kit, to the initial amusement of the younger pupils. This is followed by ineffective slippering.
At the threat of further chastisement, Katie challenges this misuse of authority and humiliates the teacher, who is later dismissed.

Thanks, Peter