So, there's a number of tags out there that are "x_on_y", for example, "herm_on_male", "dickgirl_on_female" etc.
I can understand some of the reasoning here, they could be considered the equivalent of straight, gay, and lesbian.
I'm curious if there's an advantage over separate tags though, like "herm_on_male" vs. "herm male".
Maybe I'm being silly, but it seems redundant.
Updated by revolver ocelot