also it’s false because many trans women get bottom surgery, and have genitals that would be difficult for a doctor to differentiate from a cis woman without a detailed inspection. so on the one hand they’re invoking “dude in a dress haha”
I thought the joke was try trans women have to transition to women, which still implies they were ever the gender that others assumed they were at birth and is something many feel like never actually applied. Not sure how it suggests the "man in a dress" idea? I can't recall seeing such a "joke" in the wild though.
Edit: I thought “yes, a girl, but with an extra queue" was the joke. Just realized "queue" is part of "queue the laugh." So ignore what I said.