Alceste
Vagabond
Said someone who has never seen a diagram of the inside of a vagina.well, if you are talking about homosexual sex, two male bodies are not complementary as the bodies of a man and a woman.
In fact anal sex is unnatural because anus is not a vagina. Vagina internal structure is identical to penis external structure.
So vagina is the only sexual organ which is complementary to penis-
Anal sex is unnatural because anus is an organ of the digestive apparatus. So I say it is very dangerous and unhealthy, whether it is practiced by a straight or a gay couple
I can't even imagine what a penis would have to look like.... Maybe a nobby bit on the top to stimulate the clitorus, an upward swoop for the G spot...
Really, the anus is a much better fit if that's how we measure what is natural.