That is no guarantee either that the person is male or female.
Case in point... A girl from my community was expecting and the doctor's did all the test... Did them 3 times to be absolutely certain what the sex of the baby was going to be. Well the test they did kept revealing boy. We gave her a baby shower for a boy. Well a few weeks ago she gave birth to a 8 1/2 pound bouncing baby girl.
I mean it wasn't like they did one test... They did several and still got it wrong.
And there's no guarantee that a doctor will actually pay attention to the patient, or to what he's doing.
Mrs. Johnson and Roger definitely. I'm imagining right now his imperious demanding tone, spitting out sexual commands and instructions. What are you thinking woman, do that faster, this instant! There's no cognac on the bedstand! Hold still while I.... now look at what you made me do!
I cut a bit of this.
Mrs. J and decenarian Chas. D Tate. He's a hoot in any context.