Video Transcription
Sit down, sit down. Well, let's begin our lesson, or we'll continue yesterday's topic.
In our last class, you and I studied the structure of women and male sex systems.
Today we'll see how these two systems interact with each other when a man and a woman perform sexual acts.
So the tension from the sexual arousal of the man's penis spreads the female's lips, enters the vaginal vault and starts to do the offensive-returnal movements, which are called frictions.
The penis's head, which has a lot of nerve endings, rubs against the walls of the vagina and the arousal of the man.