Many women do more than that when they're alone with themselves. But the contrived rules do not allow them to relax with a partner. It is not without reason they say, that a smart woman has it in her head, a fool has it in her mouth. I even know men who categorically reject such liberties.
I remember this series of videos. The guy who plays the son was actually a virgin before this mature woman. And she fell in love with him and teaches him about sex. Very high quality home amateur porn, no staging.