Women penetrating men (the fantasy of several)

There is a lovely lady who one day confessed to me that her greatest fantasy was to be able to penetrate her husband, and if that was bad, I told her that if her husband agreed with her, it wouldn't be bad, but she was afraid she didn't know how to do it, so I offered for her to 'get in' for a while, she and her husband are very happy now, as she told me he accepts the proposal, but sometimes she comes to my small office to polish her technique with me...