John's cock up your ass

You wake up to the feeling of a well lubed cock beginning to **** its way into your asshole. Your eyes snap open and you immediately start to panic, not only from the sight of John and the memory of his huge cock now pushing its way inside you, but you are completely bound to the stirrups and straps of a bed in the observation room. Your mouth is **** open, but blocked, muffling any attempts at screaming.

"Morning sweetheart!" Your father says cheerfully from beside John. You look at him terrified. "Don't worry, I think you'll find John much more manageable than before."

You calm down enough to notice John is already hilt deep and you aren't even in pain. In fact, it was starting to feel kinda good. From your slightly elevated position on the adjustable bed you can see John's now rather average sized cock working its way in and out of you.

"You see, to keep the ladies in our life more comfortable to the well endowed, such as John and myself, we here at Pfucher have developed a **** capable of shrinking the human penis down to a smaller size. By condensing the spongy material into a much denser form, we can now make it much harder, but also much smaller and easier to manage for donations."

You relax slightly at this, now almost enjoying rock hard cock working in and out of you; the unnatural hardness making it feel more like a warm metal dildo than a normal penis. If they have such a ****, why did they not give it to him before making you suck his dick, you wonder to yourself, as well as why do they feel the need to bind and gag you for this. You begin to breathe heavily through your nose as you try to forget your concerns and get into it.

Someone beside the bed forces you to face him by yanking your hair, then pulls out the rubber stopper impeding your breathing through the ring gag. As you take a sharp unrestricted inhale through your wide open mouth, the lab assistant's cock replaces the plug, quickly forcing its way down your throat. You struggle slightly against your bonds as the two work a rhythm into you. Your father and John watch your asshole closely.

"Nope, see? I told ya. It's wearing off already," John says to your father suddenly, as you begin to notice the rod in your ass feels like its slowly inflating inside you like a balloon. You begin to turn from pleasure to slight discomfort as the now above average cock seems to work faster as it grows. You begin to struggle harder as the pain increases, along with the relentless skull fucking from the lab assistant.

"Don't worry sweetie! We thought this might happen. So we have something new to try on you as well!"