You apparently do not have a 20 year old son. They are just dumb clucks at that age. She probably came on to him. Hubbie was out of town. Did he turn her down? She had asked him to come over to do some “copy” work....
Sounds like YOU may have or had a 20 yr old son who fits your description.
My FOUR sons, at age 20 were already in management jobs or in the Marines. My grandson, by age 20, was serving in the AIRBORNE - They all grew up responsible young men. (Sorry yours doesn't seem to have.)
I find your assumption laughable. And if you have/had a son that fits your description - well, that says a lot about you - "apparently. "