The exotic intensity reaching an unbearable peak, you thrust inside of your wife, causing her to let out a cry of ecstasy that she had never experienced before in her life. She enjoys it so much that she bucks her hips to drive you in further which makes you only want to oblige. You start off slow but thrust in deep as possible, bringing waves of pleasure to both of you. What makes it even more enjoyable is how your penis seems to want to immediately spring out of your wife each time you thrust, making you bury your manhood into her further. The sensation is absolutely invigorating and unlike anything you've experienced. At the same time though, something about it seems awkward, making you arch your back and peer down to have a look.
What you see surprises you, even shocks you. Your penis has changed from a normal flesh-colored male anatomy complete with a prominent & distinct head with veins running down the shaft to a general smoothed over, pale & creamy white-colored phallus shape. The "skin" is now that of an elastic rubber that expands from the spring activation inside which pumps air into it. All your pubic hair has even fallen out, leaving you with a pale & creamy white-colored, hairless crotch.
Despite what you see, the eurphoria of the whole experience is too enjoyable to turn away from. You just end up thrusting into your wife faster and harder, the ecstasy intoxicating your mind and body. As you continue, your flesh begins to match the tone of your crotch, changing into the pale & creamy white complexion. You don't care, not even when your skin hardens into a plastic and forms ball joints at the elbows, fingers, knuckles, neck, shoulders, lower torso, hip, knees and ankles. In fact, it allows you to be more limber, making you arch your back more as you thrust. You lean back so far that you actually need to use your arms for support. None of it actually hurts to do, now that you don't have muscles to strain. You only feel absolute pleasure.
Your wife is too caught up in the experience due to the immense exhiliration you are giving her to even notice your drastic transformation taking place. At this point, you don't think either of you would even care it just feels too good. With each thrust, more changes come to you. Suddenly all your hair recedes from your head as it too begins to harden into plastic. The yellow and black circles begin to form on your cheeks. As your ears shrink and become two little hearing holes, a thick horizontal, black-and-yellow checked line appears on one side of your head and goes around to the other side, another red-and-white checked circle appearing in place of where each of your ears use to be.
As you start to reach the beginning of your orgasm, the final changes set in. Your neck becomes a ribbed metallic joint that attaches your head to your body. Your face stiffens up, making you lose control of making facial expressions. Your nose shrinks in size and becomes triangular in shape, the nostrils closing up as you no longer need them for breathing. Your eyes become black, quartered-sized holes in your head. However, you can still close them due to pale & creamy white slates that seal up the holes for when you wish to sleep or blink. Your lips fade away as your mouth turns into an open slit with the faint hint of a smile. Your teeth become plastic bars, one on the top and bottom, that move in mimic of a mouth each time you speak. It doesn't stop you from being able to join your wife in erotic moaning.
Finally, just when the intense pleasure becomes all too unbearable that you have to release, your spring-activated air pump penis releases a long gust of air into your wife, making you cry out in orgasm. She joins you in your chorus as she too reaches climax. As you both announce your finish, it causes your transformation to mark itself as complete as the black-and-yellow checkered lines, connecting from an oversized red-and-white checked circle to a smaller black-and-yellow checkered circle, to appear on your upper arms & outer thighs in a verticle manner, as well as horizontally on your chest. The last thing to show up as your feet twitch is the black-and-yellow checkered circles right below the outer side of the ankle.
After the rush you experienced, you can't help but feel rewarded for having bought those temporary tattoos, even if it did change you into a crash test dummy. In fact, you think you could get use to living this way very easily. You decide to finally look down at your wife, wondering how she will react once the afterglow wears off...