A woman's candid expression of carnal pleasure, joy and ecstasy is something which is supposed to be private, something she acknowledges to herself when alone, or when she is with her partner. Even then her partner is not privy to some of these expressions. In this song she appears to be reliving the experience, and expressing her feelings about her man in song.
Take the yoni as a symbol, like the cross in relation to the crucifix, free of the presence of the body with it, essentially the image of the virgin with the elements of the body removed, leaving only the surrounding halo, the lines of the clothing. Is there a case for such a symbol in Christianity? There already is such a symbol, but with the body of Mary superposed and ensconced within it. The desire here is for a wholly abstracted one, but recognizable in its features.