Eva is conducing an experiment for her research project at school exploring the female orgasm with a full bladder. She decides to test this theory out using herself as a test subject. She explains the nature of the study before stripping down her clothes on her bottom half. She puts on gloves to spread her vagina to show off her anatomy before beginning the main part of the study. She begins to us the hitachi and after a short few minutes, she reaches orgasm. She then pulls out a measuring cup to urinate in to see if the amount of urine in a woman's bladder determines the length of an orgas... Show more