You stare down at your 7" black latex cock as you feel your entire length tingle and squeeze. You feel the latex fully suffuse into your cock with a squelch and begin truly changing it. You moan and roll your head back uncontrollably at the sensation.
You look back down and you can see your cock start to stretch and change right in front of you. Your rubber foreskin starts to pull back down the length of your shaft as the tip starts to morph into a slight pointier shape. The length of your shaft starts to bubble and shrink, slowly pulling the head closer to your body. Your empty balls start to retract inside your body as the latex skin surrounding them starts to puff up.
"Wh-hat's h-happening to it?" You moan. A cleft starts to open up between your vanishing balls as your cock continues to shrink. The slit on top has started moving down your now 3" shaft and your foreskin is almost unrecognisable. Pleasure is shooting throughout your entire crotch now.
"I-I don't know but it looks like it's going inside you. I think you might be becoming a woman!" Jean stammers.
You gasp as you feel your black rubber balls fully enter you. You barely registered what Jean said. Part of you feels you should be horrified at what is happening to your body, but the strange and terrifying pleasure is becoming so intense that you can barely think. You know you shouldn't feel like you want to lose your cock, but it feels so fucking good that you do. You slowly move your hand to your crotch, not caring that Jean can see you, and start to caress your dwindling staff, your fingers sending lightning bolts through your body.
As your hand begins to stroke it and you arch your back, you realise that you can't even really describe it as a cock any more. Though you don't want to admit it, your cock is now more of a large, latex clit. It continues to shrink as you rub away at it, until it is a small black nub nestled in the latex remains of your foreskin. You were no longer a man.
The moment that thought runs through your head, you feel a deep burrowing between your legs. You yelp loudly and shove your hand down further to where your balls to be. You feel a slightly moist hole starting under your fingertips. You can't stop moaning as your new latex vagina forms and penetrates you. You feel your stomach shift and your hips buck as your latex womb forms and your now-ovaries settle into their rightful place. You were a woman.
You accidentally push your finger inside as you buck your hips, causing another startled yelp of pleasure as the feeling of transformation seems to stop. You pull your hand away and look at your fingers. They seem to be covered in lubricant. You're wet.
You go to touch your new vagina again, but you suddenly realise where you are again. You turn to look at Jean and apologise.
"Jean, I'm so sorry, I just couldn't contr-".
You trail off as you see Jean standing with one hand idly rubbing her latex horse cock while staring enraptured at your crotch. She jumps as you speak and looks away, embarrassed. "Neither could I..."
You suddenly realise that you can't stop looking at her horse cock. Your mouth starts watering, and your new vagina starts to feel very warm. You suddenly properly register that you now have the perfect receptacle for that cock. You wonder what it could taste li-
No! You are a straight man and you need to focus on getting out of these woods. A straight man with a latex vagina. A glistening, black vagina. Jean seems like she could be interested in testing out her new equipment, so why shouldn't you? What should you do?