The symbiote begins to spread over your body. Your legs and torso are rapidly encased by it and, while you remain sleeping, it tightens all around you. In just a few more seconds, the strange latex has covered your arms and head sealing your whole body inside.
Once your body is fully covered, the symbiote begins to alter it, it wants to ensure its survival and reproduction and so it begins to make sure that its host’s body is the most suitable for such purposes. You begin to grow and expand in all directions. Your muscles, perfectly defined under the tight layer of the symbiote, begin to grow while you keep drifting in your dreams. Your arms and legs become thicker as your biceps and quads balloon with pure muscle, your back widens and your pecs inflate reaching massive proportions. But the most impressive transformation takes place in your groin. Your package starts to enlarge. The symbiote is going to use your body to reproduce and spread itself and so it fuses with your balls transforming them into symbiote-producing organs and your cock into a massive tool that will allow you to infect anybody.
During the final stage of the transformation, the thin layer of symbiote covering your body fuses entirely with you becoming your own skin and you begin to wake up.