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 mother knows how to bring up her son: licking without talking! Only he's no fool either, he turns his back on her and gets his revenge - the ancient Greek tragedy rests.