I know it's a typo, but I had to imagine what you're doing with the poor moth. I can imagine that a lot of these descriptions are for readers that aren't used to gay stories, so they have to describe it in more naive terms. Because the example you gave sounds like the insert character for the character not having a clue about gay sex because the readers have no clue about gay sex. So that the author can lead the readers and the character together to the rainbowland. Just sounds like that writing technique. Who knows.