Gianna Michaels and Natali Demore
After seeing an ad for a medical study, Natali decides to sign up. She had been hoping to be cured of her orgasm problems. Gianna’s methods are very different. She ties her up, spreads her vagina broad with clamps, gags her and notices that gets her excited. She uses a butterfly dildo to get her close, and calculates her orgasm quotient. Then teat clamps are applied and pulled on to see the response to pain and the building excitement. Then Natali is bound in a hogtie with her palms tied bend over a pole for more dildo tests.
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