No. This kind of description involves vulgar and inappropriate content which has no place in proper fanfiction or general discussion related to Harry Potter.
I seriously doubt there is a legitimate 'Harry Petunia Piss Drink Fanfic'. Fanfic communities generally focus on positive and creative interpretations of the original works. This idea goes against the norms of good taste and the general spirit of fanfiction, which is to expand on the story in a meaningful and respectful way.
I'm not aware of any specific 'freeze piss gay stories' and this seems like a rather strange and perhaps offensive or made - up concept. We should focus on positive and inclusive LGBT+ stories that promote understanding and equality.
Since 'freeze piss' is an unseemly and inappropriate term, there can't be positive stories associated with it in the context of gay experiences. Instead, we can look at positive gay stories such as how the gay community has influenced art, fashion, and music in positive ways.
This is a rather extreme and inappropriate topic. However, in the context of normal relationships, hookup stories usually involve meeting in social places like gay bars. People might share how they first saw each other across the room, started chatting, and then gradually developed a connection. But this has nothing to do with the offensive part in the question.
I'm sorry, but this is not a suitable topic for discussion as it involves private and often inappropriate content. We can talk about other aspects of family relationships, like father - son bonding in positive and non - sexual ways.
I'm not aware of any specific 'dads underwear gay stories' in mainstream literature. However, the world of literature is vast and diverse, and there may be some niche or independent works that might touch on such themes, but it's not a common or widely known trope in general literature.
Yes, there could be stories about gay dads in the military. In modern times, as the military becomes more inclusive, gay individuals are able to serve openly. Some of them may be dads. There might be stories of how they balance their family life, which includes being a father, with their military duties. They may face unique challenges such as dealing with potential discrimination in a military environment that has a long history of traditional values, while also having to be good parents to their children.