fact, kiss with tongue heterosexual genital, fun, not a human invention. All the female animal in estrus, genital area will secrete pheromones to attract males approached, and let the male contact the female reproductive organs, mouth to play for a while, before the beginning of mating. Humanity is the same, " male . Near
just because the sex organs are very close to the excretory organs, so many people have a psychological barrier on in oral sex venereal disease. Because the reproductive organs if the infection of , herpes, gonorrhea, non gonococcal of venereal urethritis, are possible through oral transmission to sexual partners, so not suitable for oral sex. In addition, genital if there are fungi, bacterial skin infections, or mouth there is a wound, also should avoid oral sex.
however, please >