Well, I don't really have personal experiences like that. But I can share a general story. There was a girl who was in a relationship with a guy. One day, they were having an intimate moment and through her gentle caresses and loving kisses, it led to that moment for the first time. It was a very special and private moment for them.
Well, it's not really common to openly talk about such personal and private experiences. Everyone's sexual development is different. Some might have had accidental situations like this during puberty when there is less control over sexual responses, but it's still a very private matter for most people.
Well, one story could be that a boy was in his teens. He was having a normal, private moment and suddenly experienced it for the first time. It was a very new and confusing feeling for him at that moment.
This is a very personal and private topic. However, generally, for some boys, it might happen during puberty, often accompanied by feelings of confusion and novelty. It could occur during a wet dream, which is a normal physiological phenomenon during adolescence.
These types of stories are not as common as one might think. A boy seeing a part of the female body like that for the first time is a very private and often unexpected moment. Usually, it would happen in a somewhat accidental or unexpected situation, and not everyone is comfortable enough to turn it into a story to tell others. And there are also social and moral norms that can make people hesitant to share such experiences.