I remember a few years ago, one of my daughters, she was like 6 or maybe 7, heard someone described as a “Male Nurse.”
She was howling with laughter, and kept repeating, “A male nurse!” as if that whole idea was completely preposterous!
Which was itself hilarious, b/c we had certainly never said anything like that around her. Somehow she just got the vibe that men are doctors, and women are nurses. And a male nurse is some kind of freak show!
The female dr. that we now see is so much more thorough and professional than the male dr. that we had. Plus, she is a kick in the pants.
I had a similar experience with my daughter when she was about 5. I asked her what she wanted to be when she grew up and she answered, "a nurse". So I said, "A nurse. That's good. How about a doctor?". She replied, "Oh no, boys are doctors, girls are nurses". (She's not a nurse; she works in CAD).