Arriving home, you decide that you're far too tired and it's far too late to start trying to make sense of the night's events. Maybe you were hallucinating, or maybe you just need to stop staying up all night, but whatever the case it's not a good time to worry about right now - you can barely stand, and with every second your eyelids become harder to hold open.
With nothing left on your mind but sleep, you walk into your small, dark room, haphazardly dropping most of your clothing on the floor and leaving you in your underpants. After letting out one final yawn and one last stretch, you slowly crawl under your sheets and onto your bed, resting your head on the soft and inviting pillow as you gently sink into your mattress. Your mind drifts further and further, all thoughts leaving it as you fade from consciousness into a peaceful sleep, the shift into dream like calmly floating on a marshmallow cloud... no, wait. Something's wrong here.
Your mind snaps back into awareness as you come to the realization that something is terribly amiss, and almost immediately you realize what that something is: you actually ARE sinking. Your regular mattress is nowhere to be seen, and has been replaced by a large, cherry red mass of latex, its surface shining even in the darkness of your room. You sink into it slowly, as though it were a soft solid object slowly giving way rather than a fluid, and your immediate reaction is to try to get out. You try to lift your arms but find that they're already submerged, and as you raise them you watch as the surface of the thick rubber turns from liquid to solid, allowing your arms to come out up to the elbows before suddenly becoming tight and tense and refusing their escape. These efforts may not be enough to make your way out of the mass, but they are enough to give you a clear view of your latex-covered arms, which have lost their human shape and are now thicker, the fingers gaining pointed tips and the lengths looking markedly different even in these shadows. Attempting to lift your legs, you can barely make out the same for your now lengthened feet.
Your concern and fear only grows as the latex encroaches further, swallowing your elbows as it starts to flow over your chest and begins to gently caress the borders of your pelvic region. You redouble your efforts to escape, but are met with the same resistance as before, and no matter what you attempt you find it all to be an exercise in futility. You can do nothing but watch as the substance pours over your chest, holding you down so tightly that you can barely do anything but cock your neck and watch the rest. Soon, you can feel it pouring into your boxers, weaving its way around your hips, massaging your penis. You see the boxers begin to fill, a bulge at their edge slowly growing. Soon, you see something begin to peak through their front opening, a thin line of cherry-colored "flesh" trying to push its way out. Within seconds, the bulge begins to make its way outside of your boxers, the arch of flesh moving further and further out, until it's finally too much for them to bear and the underwear tears at the front, unleashing the thick, foot-long red rubber cock. Within a few seconds, the penis is all that you can see of your body below the waist, the rest of it deep within the latex.
Freeing yourself from the distraction of your now-massive genitals, you look to your torso. Your chest has already sunk beneath the surface, and you can no longer see it, but you can see a small roundness indicating your stomach beneath the surface. However, your delight that your torso isn't completely out of sight turns to dismay within an instant as that small hill starts to expand, puffing out into what might be described as "cuddly" proportions before it too sinks below the surface.
Now all that remains is your head, and you come to a distinct realization: it's not just your physical form that's at stake here. If you sink into this stuff, it's very possible that you'll drown to death. Unfortunately, every other part of your body is held, immobilized, beneath the surface, and all you can do now is wait for it to take you.