What will help a girl understand how good an orgasm she is experiencing and whether she can experience more? To conduct such a study, the girl agrees to sit on a vibrator, tightly tied by her arms and legs to a chair. This is her first such unusual experience, so she shudders and jumps strongly from the surprise and power of the vibrator, but the tight bondage does not allow her to change her mind and she has to totally goes in her sensations and into this study to the end. Gradually the vibrator power increases. Her whole body is shaking. She screams and moans, but has to cum again and again while she has the strength. Do you think she is happy with her experiment?