I'm so glad you've volunteered to be part of this exciting trial, to see how we can maximise semen output in our sperm bank. I just need you to sign the consent form, then I'll open the sealed envelope to see which random sexual activity you've been paired with for this session. Oh! Pain and humiliation! How interesting; I've not actually administered this yet but the instructions helpfully list the equipment I should use, starting with bondage cuffs to fasten you to the chair! Hmmm, nipple clamps, a prostate massager, ring gag and strap on dildo. This should be interesting! I wonder if being made to suck my strapon through a ring gag will be such a turn off that you can't cum? Or just maybe, it'll make you cum harder? Let's find out!