Well, it could be a narrative that focuses on the sexual identity or encounters of a Filipina. But this kind of title is quite ambiguous. It might be part of a cultural exploration where the sexual attitudes and behaviors of Filipinas are examined, or it could be something more personal and individual - based, like a memoir or a fictional short story that delves into the sexual experiences of a particular Filipina character.
A "sex pinay story" could potentially be a fictional or real - life account that involves the sexual aspects of a Pinay (Filipina). However, this is a very broad and rather unclear term. It could also be misinterpreted or used inappropriately. In a more positive light, it could be a story about sexual health and empowerment within the Filipino female community if it's told in an educational and respectful way.
I'm not entirely sure specifically what a "sex pinay story" is as it could refer to a variety of things. It might be a story related to the sexual experiences or relationships of a Filipina woman, but without more context, it's hard to be more precise.