Someone that makes women cover their drinks when they walk in the room

Oh, it's surprisingly common. There are even occasional bursts of people cutting out the middle-person and going for directly injecting people on the dance floor

It's scary out there

(and don't drive drunk kids; you're risking innocent lives because you're too cheap to get a cab. Not a good look)

"Date drugs" are super common and easy to buy. Psychopaths that actually use them on unconsenting people, fortunately not very common. But common enough thst I would never leave my drink unattended.

In logic, finding a case where a statement isn't true is a very common and correct way to disprove that statement. So the proposition that "a woman has xx chromosomes and is born with a vagina", would actually be logically disproved by the counter-examples you bring up.

I mean, thats a very naive opinion formed on outdated knowledge of the human biology. I'd be happy to share resources with you if you actually want to learn.