I'm not sure if there is such a specific fanfiction. Fanfiction can cover a wide range of themes and descriptions, but this kind of rather odd and inappropriate description might not be common in mainstream Naruto fanfiction.
As far as I know, this isn't a common theme that has produced well - known fanfictions. Most popular Naruto fanfictions tend to focus on things like character relationships, battles, or alternate storylines. However, that doesn't mean there aren't some out there. You'd have to do a deep search through fanfiction archives to find if there are any that have gained a following for this specific concept.
A common plotline in such fanfiction is the exploration of their relationship further. Since Kushina died when Naruto was young, fanfictions often show them getting to know each other better. It could be something like Naruto learning more about his mother's life before he was born, like her training as a ninja, her friends, and her dreams. And Kushina could get to know Naruto's friends and see how he has created a new family of sorts in the form of Team 7 and the rest of the village.
Well, in canon, Kushina died when Naruto was born, so any interaction between them in fanfiction is non - existent in the original story. In fanfiction, we can see them interacting, like having conversations or going on missions together. Also, in canon, we only get a few flashbacks about Kushina, but in fanfiction, she can be a fully - fledged character with her own story arcs.
I'm not sure specifically which 'Naruto is Hung' fanfictions are good. You could try searching on popular fanfiction websites like FanFiction.net or Archive of Our Own. Look for ones with high ratings and lots of reviews.
One common theme is alternative universe stories. For example, what if Naruto was raised in a different village? Another is exploring his relationship with his parents in more depth. Also, there are fanfictions that focus on his training and how he masters new jutsus in unique ways.
Without more context, it's difficult to say exactly what the 'hung boy story' is. It could be a made - up story from someone's imagination, or it could be part of a local legend or a personal anecdote. It might be a story about a boy who is 'hung' in a social sense, like being excluded or left out, and the story details his journey to find acceptance or a way to fit in.
My new boyfriend is really charming. He has a great sense of humor and is always making me laugh. We like to go for long walks in the park, holding hands and sharing our dreams. He is also very kind and caring, always there when I need him.
In the story, he could be racing against time to make all his deliveries. Along the way, he might encounter some interesting characters, like an old lady who gives him advice on the best shortcuts in the neighborhood. This helps him complete his deliveries faster and he might even get a bonus for being early. All of this while still being 'hung' either for food or for success.