[ WP ] There is a third gender . It is morphologically , psychologically , sexually and culturally distinct from both men and women . They make up 33 % of the population .

First, the genitals. You've got innies, outties, and... wait, what else is there? Is this some kind of perverted trick you're playing? 
 
 Next, you know, the sexual aspects of some third gender. Perhaps they do n't need other people? That's clearly one option, but you could also allow for sex with male and females. The third sex individuals might mate with both, or, wait a second, why would n't they only mate with male or female? There's nothing excluding that from the range of possibilities. 
 
 Of course there are preferences for each sex, like, generally, pink for girls and blue for boys. They individuals might not prefer either color, but one is distinctly different from another. So is that color green? 
 
 We're starting to form a picture here. Some new form of genitals, sex with either male or female or both, and some new reference of identity. Green, for example, being very indicative of that specific gender. 
 
 What have we learned in our musings? 
 
 Aliens, of course.
