At my last one, the nurse asked if I was on HRT due to being almost 70. I laughed and said no, I am trans. She didn't bat an eye and said, "OK, step over here."
I once had a nurse (she was new) doing the screening questions before seeing my Primary. She asked when I last had a PAP. We kind of stared at one another for a minute, then it dawned on her... "Oh, right. No uterus." We both laughed at that.