Eve and the serpent in the garden of Eden. The creation myth. The birth of sin. come on, you don't have to know religion to know that story, it's pretty much universal and almost always the inspiration behind photos and paintings like that. Either that or the phallic symbolism of the snake and the woman worshiping it - symbolizing male dominion over the female, which is why a lot of females would be offended by it. Or I'd say put off by it. It's a pretty common theme so it's not like it's something they've never seen before. I don't know much of anything about bdsm or the rules of erotica and all that so I don't see that in the photo. It's not an erotic photo to me, but whatever.