This description is inappropriate and disturbing. We should not tolerate or promote any form of inappropriate or unethical behavior towards family members. There is no positive or acceptable 'interpretation' in this regard.
First, we can educate people about appropriate values and ethics. When people understand what is right and wrong, they are less likely to spread such inappropriate content.
A girl was at a public fair. She had a bulge in her skirt because she had secretly tucked in a small plush toy she won at one of the game stalls. She was too shy to carry it openly as she thought people might laugh at her for being so childish at her age. But as she walked, the bulge was visible. Eventually, a kind old lady noticed and asked her about it. The girl confessed and the old lady just smiled and said it was very cute that she still liked plush toys.
Awareness is key. Men should be more conscious of their surroundings and the personal space of others. For example, in crowded places, they can keep their arms close to their bodies and move slowly and carefully.
No. Such stories are inappropriate and vulgar, and they go against public moral standards. Sharing this kind of content in public is not acceptable behavior.
One possible story could be in a crowded bus. A man is trying to move through the aisle and accidentally brushes against a girl's backpack which has a bulge. He quickly apologizes and explains it was just an accident due to the lack of space.
One reason could be that she is carrying something in her pocket like a phone, a small wallet or keys which create a bulge. For example, if she has a large and bulky phone case, it can be quite noticeable.
It's a rather unclear phrase. 'Bulge' could imply something protruding or swelling. 'In public' refers to a public place. 'Flash' might mean a sudden or brief appearance, and 'girl story' could be a story related to a girl. But without more context, it's hard to be precise.
One common type of story is where a man and a girl are colleagues at work. They start off as just workmates, but as they collaborate on projects, they begin to respect and admire each other. This could lead to a great friendship or even a romantic relationship if the circumstances are right.