A Third Edge of the Sword biology lesson for @HamletHologram

When you see this mentally ill faggot, beat him across the face with a lead pipe. I guess it doesn't have to be lead, or even a pipe. The important thing to do is to keep beating him in the face until the pipe (or bat, or thing that isn't your fist because you don't want to get AIDS) gets a good quantity of his blood on it.

Then find yourself a lab. It could be an NCIS-style forensic lab, or you could try 23-and-Me if they accept blood (they don't). You could even get one of those home test kits but I'm sure Gary would object to that not being the current science or yadda yadda yadda. Ideally, you go to a cutting edge genetic research facility, really get the most up-to-date science we have available.

Anyways, have them test the blood from your pipe. Ask them a simple question: which biological sex is the person the blood came from?

You'll be pleasantly non-surprised to learn that they can answer this from one piece of biological data and there are only two possible answers. Well, one possible answer, since he's a guy. Fun fact, it wouldn't even be able to tell that he's a faggot (unless he had AIDS, and even then we can only say with 99.999% certainty): the long-hyped search for biological evidence they're "born that way" has stalled out (and again with "5 bits of biological data, a favourite number of theirs apparently).