Mr Ell,

Sex, as I'm certain even you must know, is determined by the X and Y chromosones. I, myself, am XY. Miss Rutledge is XX. An XY chromosonal makeup determines that one is male, as XX determines femaleness.

There are other combinations possible, but they all involve additional X or Y chromosones. One of them, XYY, can produce a testosterone-spewing mutant which, when coupled with other genetic variables in the helix, easily becomes a swamp-dwelling sociopath who has no idea of good manners or even common decency.

I regularily use the word "sex," Mr Ell. Perhaps you would like to try using these words and phrases: thank you, you're welcome, please, how are you?, hello, lovely day, and others.