Left on the option for increased vagina strength and flexibility was a disclaimer in the fine print: "remaining at this high rate will lead to permanent rubberification after 30 minutes. You realize that 29 minutes have passed, and you try to run to your computer. Your legs and arms flop about as your body has become extraordinarily stretchy. Brian looks on as you struggle, rubbing his huge boner as you saunter across the room. With each step, a little of his seed drips out of you, but your body is still inflated with his huge amount of seed. As you finally reach your computer, it's too late. 33 minutes have passed, and you flop down onto the floor.
As you fall, you realize that you no longer have bones. Your skin becomes rubber, and you can only walk by holding onto objects or with the help of a person. As your bones disappear, you shrink down to 5' tall, and your hips and butt widen as they absorb your decreased height. Finally, you feel your face tighten, as your head becomes latex. You can still talk, but it comes out high pitched and squeaky. Still, however, you feel horny. With the help of a pair of crutches, you walk to Brian and collapse in his arms. He grabs you, holds you up, and pushes his huge cock up against your dripping, rubber vagina.
You twist a smile and wrap your legs around him. So stretchy are you that when he lowers you onto his giant cock, you easily expand to accommodate him. As he enters you squeak and squeal and wrap yourself around him with all your strength. He enters your womb, and you feel your uterus expand. You are now strengthless, made of rubber, and attached to Brian. He bounces you up and down until you can see only pink stars in white light, as each thrust sends you into squealing, squeaking orgasm. When he cums, your rubber body contracts around him and sucks up every drop. You inflate as he fills you up. His cum overflows from your womb and enters the rest of your body: Your butt, your breasts, your legs, your feet, your arms, your hands, your head, your face, and finally your brain.
When it reaches your brain, you lose consciousness for a moment. You have lost all former memories, and know that this is how everything is supposed to be! A stretchy cum receptacle! When you come to, you have been filled up so much that you are now 5'6" tall, and a bit wider. Your butt and breasts have engorged to huge proportions. When you try to move, his seed sloshes around inside you, and you feel warm and satisfied. He tries to exit you, but your elastic pussy greedily latches onto him and pleasures him so that he must remain inside you. You tie your arms and legs around him tightly, and he sticks his tongue in your mouth. your breasts heave with each movement of his tongue. For hours you remain attached, until your rubber pussy forces Brian's balls to shoot a load bigger than even before.
So much enters you that even your face inflates full of cum. Your lips and cheeks puff out, and you are stretched to the absolute limit. As your body is finally satisfied (for the moment), your pussy lets Brian go and he exits you, still shooting sperm into you as he slides out. Your vagina then clamps tight to prevent and seed from leaking out. You feel your body start to process the gallons of seed inside you, and you convulse in uncontrollable orgasm while Brian holds your bloated body in his arms. His tongue is in your mouth, and your lips seal his tongue in your mouth. You cannot talk, but you feel your body start to deflate, leaving you happy, warm and wanting more. Your vagina loosens up, and you regain motion.
You are happy, but can never be forever satisfied. You need more!
So you...