Snakes are an ancient symbol of fertility and creation. So it doesn't surprise me if a woman finds a snake slithering all over her body to be sexy. Or to lick the snake for that matter.
LOL!
Fertility? Well, I guess they are rather phallic. They have represented re-birth, like in the epic of Gilgamesh where the snake steals the flower of youth, shedding it's skin. This woman was probably trying more to evoke the snake-as-phallic-tempter ala the Garden of Eden though.
This was funny but I feel bad for the snake. Remember folks, a handful's all ya need, just say no to implants!