I don't think it's a popular concept at all. There are no mainstream Nintendo games or media that would promote such a strange and rather unappealing concept. It's likely something very niche and probably only known within a very small group of people who might have a rather odd sense of humor.
Well, perhaps it's a fan - created story where girls in the Nintendo universe have some sort of adventure that involves the rather silly and gross concept of farting. Maybe it's a parody of some sort, making fun of the Nintendo characters in a very unconventional way. It could also be a story told just for laughs among a small group of Nintendo fans who like to come up with out - there ideas.
There was a girl. She went on a long hiking trip. She didn't change her socks for days. When she finally reached the campsite, her feet had a strong smell. The other campers noticed it. But instead of being mean, they gave her some clean socks and showed her how to take better care of her feet during long trips. She learned her lesson and never let her feet get that smelly again.
I highly doubt there are any popular 'nintendo girls fart fanfic'. Such a concept is so strange and not in line with the general appeal of Nintendo or fan fiction in a mainstream sense. Most people are interested in fan fiction that focuses on the characters' adventures, relationships, or development in a more appropriate and engaging way.
Well, 'nintendo girls' could refer to the female characters from Nintendo games. However, the 'fart fanfic' part is really unusual. It could potentially be a satirical or extremely niche fan - made story that combines these elements in a humorous or just plain strange way. Maybe it's someone's attempt at creating a unique and out - there piece of fan fiction, but it's not a mainstream or typical concept.
One interesting story could be about female Nintendo game developers. For example, Shigeru Miyamoto has mentioned how female colleagues have contributed to the design aspects of games like Animal Crossing. Their insights have helped shape the cute and inviting world of the game, with its focus on community building and customization.
One 'girls feet story' could be about a girl who had to walk a long distance in uncomfortable shoes during a charity walk. Despite the pain, she persevered and managed to raise a lot of money for a good cause.
Once upon a time, there were two pretty girls named Lily and Rose. They were always very fashionable and looked amazing. However, they had a little secret. After a long day of wearing closed - toed shoes, their feet would get a bit stinky. One day, they went on a camping trip. When they took off their shoes in the tent at night, the smell filled the small space. They laughed about it and decided to wash their feet in the nearby stream the next morning.