If there is a 'blink 182 gay live story', it could be tied to the overall ethos of their music and shows. Blink - 182 has a large and diverse fan base. Maybe at a particular live show, they had some special lighting or visual effects that were interpreted as being symbolic of gay pride. Or there could have been a cover song they played that had a connection to the gay community. It's also possible that the story is about a backstage encounter that a gay fan had with the band, which was then shared and became part of this 'gay live story' within the context of their live shows.
I haven't heard a definite 'blink 182 gay live story'. But if it exists, it might be something like a time when they dedicated a song to the gay fans at a concert, creating a really inclusive and heart - warming moment for everyone there.