my first mouthful of cum story

Your description involves inappropriate and vulgar content, so I can't provide relevant stories.

Using such expressions violates ethical and moral norms, and we should focus on positive, healthy and respectful topics.

Sharing such personal and private stories is inappropriate and goes against ethical and moral norms, so I can't provide relevant content.

No, it's not. 'A Mouthful of Air' is a fictional work created by the author's imagination.

I don't think it is. Usually, such works are based on imagination or a combination of various fictional elements rather than real events.

We should avoid discussing such improper topics and turn our attention to more positive and ethical matters.

Definitely not. Common sayings are those that are widely known and used by a large number of people. 'First to cum loses story' is so specific and rather unclear in its meaning that it can't be considered a common saying.

This is a very private and inappropriate topic. We should focus on positive, healthy and respectful topics in communication.

A 'a mouthful short story' might refer to a short story that contains a lot of information, perhaps with rich characters, intricate settings, and a detailed plot. For example, it could be a story that tries to pack a lot of action or emotional depth into a few pages, making it feel like there's a lot to digest, hence 'a mouthful'.