Someone who knows me and lurks here emailed me to tell me that any taboo, even those logical and necessary, always has an equal and opposite fetish counter-reaction.
So say, if cute blondes twins were culturally required to do public performances of p2m of each other, I might download videos of them in separate rooms doing taxes and find that erotic.
It reminded me that the only period in which my grandmother drank was in during Prohibition. My mother's older sister swears they even made their own liquor in the cellar with a still and a stand-alone tub. She was like 12 at the time.
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Amo i Gemelli!!