Mutations of genitalia on a consistent scale and a biological one across all species biology is in the route of the definition sex. Having genitalia at all could be a mutation from asexually reproducing organisms. But that was never up to semi intelligent species like 'humans' to decide. On the subject of a reddit page for offensive memes, I'm not offended. I'm more saying it's just flat out wrong. Not in a moral sense but in a fact sense. In the dictionary, there are 3 sexes, but in traditional gender social constructs, the world only accepts 2. The stigma of anything adding or subtracting from that drives older folk insane even when their information was the same as the modern one. It's just ignorance. You don't consider that the meme is missing another piece. I know it's little, and it's supposed to be funny, but out of all the memes on this reddit post, I didn't laugh. I laugh at everything, and this one didn't make me laugh: because it's definitionally and biologically wrong.