Modern sex culture has evolved beyond simple masturbation, advancing into a trend of discovering new erogenous zones. Women today seek more than just clitoral or G-spot stimulation. Exploration of the mysterious erogenous zone deep within the vagina—the "portio"—has become a new form of self-pleasure, known for delivering prolonged orgasms once stimulated. Starting with finger play, the women gradually arouse their bodies, feeling their cervix descend. Then, they insert electric massagers or vibrators deep into the vagina, targeting the firm, textured area near the cervix—the portio. At that moment, they're enveloped in an almost transcendent pleasure. Drooling uncontrollably, they climax repeatedly, eventually losing bladder control. This new masturbation style features dual stimulation—using vibrators and electric massagers on both the clitoris and the portio. Girls instantly squirting the moment their portio is stimulated embody the ultimate peak of pleasure. Enjoy extended scenes of these women masturbating in secret, unaware of their parents, as they repeatedly soak themselves with involuntary urination. Welcome to the world of portio masturbation, filled with a brand-new sensation of ecstasy.