"Congenital homosexuality is a neuroendocrine disorder which is caused by testosterone abnormalities in utero. In females, fetal overexposure to testosterone causes male digit ratio and brain development typical of males, which presents as "tomboy" behavior, butch lesbianism, etc. In males, either under or overexposure to testosterone (excess converts to estrogen) as a fetus leads to the opposite - female digit ratio and female brain development, leading to "sissy" behavior or twink homosexuals.
In either case the person's body subtly develops opposite sex characteristics - men are small, delicate, and babyfaced, while women are thick, rough, and androgynous.
These people have a natural tendency towards opposite sex roles including transvestism. Rather than the OCD patients controlled by their neurosis, these people are just naturally happier in sex roles congruous with their neuroendocrine abnormalities."