How high are you right now, on a scale of one to ten cause I'm about a 26 and even I'm lost.

I think it was created because the bisexual people are common and extant in all societies. All the way back to Greece, where Hermes and Aphrodite got busy to produce Hermaphrodite. Plato also puts forth a two-gendered creature out of the mouth of Aristophanes in "Symposium."

The hermaphrodite "fetish" ias as old as the hills, and then some.