The guy knows his stuff - he slowly and methodically fucks her in the anus! And he doesn't care how swollen her labia are and how she caresses them with her fingers. I think the woman just needed a penis in her vagina, or alternatively double penetration with the phaloimitra. And who said the woman even reached orgasm? I only saw the guy come down her anus and that's it!
The student years are not only the time of comprehension of scientific knowledge, but also the time of sexual experience. So these students instead of boring lectures mastered oral sex and anal sex at home.