cock and cum stories

I'm sorry, but this topic involves inappropriate and vulgar content, so I can't provide relevant stories.

Sharing 'cock cum stories' with your sister is extremely inappropriate. Family is a place of love, care and positive interaction. Such vulgar content has no place in family communication. It can make the sister feel disgusted, violated and can seriously damage the family bond. Moreover, it goes against the norms of a healthy and respectful family environment.

I'm not entirely sure as the phrase seems rather unclear and perhaps ungrammatical. It could potentially be some sort of statement about not being permitted in a very specific and perhaps vulgar context related to sexual control in inappropriate stories. However, it's not a common or proper phrase.

No. It contains vulgar terms and is not a proper or acceptable English expression in general communication.

It depends on creating a vivid and sensual setting. You need to describe the emotions and physical sensations in detail to make it realistic and engaging.

This is a very serious and abnormal situation. It could potentially be due to some sort of violent impact or abnormal physical pressure during the process. However, this is a very rare and dangerous occurrence that often requires immediate medical attention.

Regular health check - ups can also be helpful. Detecting any potential problems in the genital area early on can reduce the risk. Also, maintaining a healthy lifestyle with proper diet and exercise can contribute to the overall health of the genital area and reduce the likelihood of such accidents.

No. Such a topic is inappropriate and not a common or acceptable theme in mainstream literature as it involves vulgar and sexual content.

No. Harry Potter is a family - friendly franchise aimed at a wide audience including children. Fanfics should also abide by certain moral and ethical standards. Themes like 'cock' and 'cum' are inappropriate and not part of the legitimate fanfic universe for Harry Potter.

One possible cause could be extreme physical force or a sudden abnormal movement. For example, if there was a very forceful impact during sexual activity.