Her professor called it an 'experiment' in human sexual response. She was wary, but she wanted to make a better grade in his class and besides, he was kinda sexy for an older man. After a drink or two to 'relax', she found herself allowing him to take her into his 'lab' where this wired working looking frame was. Hours later, drool pouring from her huge ball gag down her chest, making her pierced nipples glisten. The orgasms stopped long ago, yet this huge vibrating thing kept buzzing, burning her already red, swollen, clit and labia. Her legs have long given out from trying to stay on tip toe...

Her professor called it an 'experiment' in human sexual response. She was wary, but she wanted to make a better grade in his class and besides, he was kinda sexy for an older man. After a drink or two to 'relax', she found herself allowing him to take her into his 'lab' where this wired working looking frame was. Hours later, drool pouring from her huge ball gag down her chest, making her pierced nipples glisten. The orgasms stopped long ago, yet this huge vibrating thing kept buzzing, burning her already red, swollen, clit and labia. Her legs have long given out from trying to stay on tip toe to escape the vibrator. She looks at him with pleading eyes as she sits with a drink, slowly stroking himself. "Looks like you are going to get an 'A' for your research, young lady"...