The Professor was busy lecturing students while I had his wife on their marital bed, ready to try anal for the first time. She was very sexually inexperienced and the Professor was very keen for me to broaden her horizons. Over the course of two years, I introduced her to all sorts of new experiences.
That day each guest got two hours with her. He made the most of it, was invited back again the next morning, and several other times as well. 9 inches balls deep every time, often at her instigation.