Ben challenges her

Dr. Francis and Dr. Moab rejoined him as Gina left. Dr. Francis got right to it, "Ok strip down and being masturbating for us. Please let me know when you are close to orgasm so we can take some measurements, and make sure to capture your ejaculate in the proper receptacle."

Ben answered her, "Oh you make it sound so exciting Sherry; I hope I don't fall asleep during the process."

Please call me Dr. Francis; I do not wish to be to be considered as less then a total professional. Now, what type of porn would you like to masturbate to?"

Ben kept pushing her by saying, "What I really want to jerk off on is what you have under your lab coat. I think you have some really nice tits. If you could just let me see them we could really get down to business."

She just stared at him coldly and said, "Yes, I am sure a person like you would enjoy that wouldn't you. I am sure your fraud will be revealed shortly and then you can quit wasting Dr. Moab's and my time. We have important research to do and you are nothing more than an irritant."

"So you think Gina just faked it somehow? You don't think that my cock gets bigger, or that I can fill seven or eight of your little tubes with cum?"

Dr. Francis answered haughtily, "I am quite sure it is impossible. You must be faking it somehow."

Ben smiles and said, "So you might be willing to put a little wager on it, maybe one where you could enjoy your victory over me, maybe dominate me?" Ben heard Dr. Moab snort in surprise as he said this, but he saw that he had finally caught Dr. Francis' attention, and he continued his proposal, "So here is the deal Sherry, I will jack off four times, if my cock grows each time I ejaculate then starting after my fourth ejaculation you have to let me tit fuck for my fifth ejaculation, blow me for my sixth ejaculation, fuck me for my seventh ejaculation, and ass fuck my for my eighth ejaculation. I fail to ejaculate eight times then you win and I have to do whatever you say for one night of your choosing, deal?"

"Call me Dr. Francis," she answered with some irritation.

Dr. Moab broke in at that point, "Come on Sherry make the deal with him and let's get started. He can't do it anyway; we both know that, so what's the harm? "You can have some fun with him."