If there was a third sex, what would it be?

They are called Shemales.

Sexual identity, or gender, is a man-made phenomenon. We as a society decided to allow there to only be 2 sexes (in most states, some recognize an "other" category). This makes sense because of the 2 most common types of external genitalia.

Some cultures have several genders. I did a thesis paper in college on a culture that had 5 genders. 3 for women (pre-puberty, menstruating, and post-menopausal). And 2 for Men (pre and post puberty).

There is already a third sex, which both male and female at the same time.

There is a third sex. They are called hermaphrodites, meaning they are both partially male and female, usually with underdeveloped genitals of both sexes.

there is a third sex cant spell it lol but there is, the one where u have both female and male then there is the one where u have neither so i guess theres 4 lol u know jamie lee curtis has neither.

Yes, the third sex is either bi-sexual or asexual people (means people who are not attracted to either genders)

A hybrid, I guess. But remember killer bees? When you mix, you may get the worst of both, not the best of each.

It would be happy from not having to deal with men,lol

knitting guy is right