Jason finally decides to leave the shower, taking care when drying his body not to hit anything sensitive with too much force.
Sarah keeps talking to him, but he mostly ignores any of it, those constant orgasms have completely drained his energy and he can barely concentrate right now. He doesn't even remember to wear anything, just lies down in bed with his ass up, not really minding the airflow, as the room's temperature was in too much of a cozy range that he just passes out in seconds.
Sarah on the other hand, upon realising that Jason is asleep, stops talking and tries to do the same, but can't stop thinking. She can't see a clock, but considering the timefrime, it was probably near midnight before she gave up sleeping.
Sarah than decided to evaluate her situation. The doctor said that she can control a lot of the process on Jason's body, mainly because she is literally most of his internal organs and part of his skin. She starts testing the limits of her control.
First, her mouth, she knows that she can talk, but what other things could she do? She remembers that she can salivate on command, and she has been able to control Jason's cheecks before. She tries opening as wide as possible, realising that her maximum circunference is probably wider than anything she or Jason ever could, she could probably fit an entire apple easily in there if she tried. Than how deep and how puckered she could make her mouth go. Also way farther than regular. An interesting sideeffect of having way more muscles and neural connections on that area she thought, realising that she probably has as much of a fine control of Jason's asshole as she had of her original face.
Next, deciding to try more with the butt cheecks, she can easily move them, that she already knew, but how well could she do it? She first tried to go 'cross eyed', and successfully did it, laughing as the thought of a chamaleon crossed her mind. Next, she tries to clap, and again, laughs a lot as the clap is very audible, not that Jason can wake up at this point. She tests how fast she can do it, and has fun knowing that she can still participate on congratulations. Than she tries to see her 'grip'. Pulling the cheecks together, she can guesses that she could probably hold something in between the, well, now she can give Jason as extra hand too.
That is when one of Jason's legs fall to the side of the bed. She realises that all of this glutes fun might have moved his thighs. And this gives her an idea.
She now tries to test how far that can get. Using her knowledge of anatomy, she decides to test some key muscles on her glutes, and she can get Jason's hips to stand higher. "Wonderful!" she thought to herself. She lays back down, but as she does that, she sees something at the lower edge of her vision. It is Jason's cock, it must have changed position when she decided to lay down again.
She does some mental calculations, and comes to the conclusion that it is probably hitting a near 15 inches while flacid. "It must have gained mass from absorbing me, as I clearly remember Mike having the bigger cock of the two. Hahahaha, poor Jason, too awkward to realise he also gained some fun 'additions'. Maybe the doctor can do him a solid and leave him with that."
And now she was curious. The doctor said that she can control his cock. How far would that control go? She starts thinking about this alien part, trying to move it, as of Jason's body, that is the only thing that she didn't have originally. After some trial and error, she can get it to move through a mix of blood control and what she thinks are part of her muscles that entered it. Having fun, she started playing with as an appendage like it was an elephant's trunk.
She start pointing it around, and decided to test how fast can she do it, that is when she hit her own 'face' with it. Than the idea came to her "Wait, I have a cock all for myself, a huge, large, tasty cock all for myself, and I can suck it at any time."
She completely stops thinking straight, and her nymphomania starts acting up again. She moves it into her mouth, and starts sucking on it. The strong storm of sensations takes over her and she starts going crazy. She can hear Jason's sleeping moams, but she doesn't mind, her body is in heat as she can get the sensation of both sucking and being sucked, achieving new heights. She can feel her balls working again, and she is curious to know how Jason's cum tastes.
As she finishes on her own insides, she can feel it is very different from regular cum. It might be the estrogen, but she actually likes it a lot. Feeling a little exhausted, she finally passes out and falls asleep.
Jason moans some more, as his chest starts to get a little too uncomphortable from the position, not realising that it is growing.