When you gain consciousness again, you are not in your cubicle. You are laying forward on an oddly-shaped chair, one which allows your gravid belly and swollen tits to hang down through a gap between the supports holding your body aloft.
After taking the moment to acclimate, you realize the tugging sensation of suction at your nipples had roused you from another drug-induced sleep. A pair of cups are affixed to your breasts, pumping milk from you. Every few alternating pumps, you feel a twinge of pleasure, enough to give you goosebumps; the whisper of a shiver that runs from your shoulders down to your cunt. And your cunt, how it twitches...
Tensing your thighs and calves, giving yourself a budge, you test the limits of this comfortable position. Your ankles and wrists are free, nothing tethering you to this strange bench you find yourself bent over. Despite some soreness in your knees, the intense pleasure flowing through you keeps your body from dwelling on how long you've been positioned here, being pumped for milk, looking face-down through a hollow headrest that only provides you with a view of the floor--and, with it, some of the covered shoes of the doctors and assistants standing around you.
You can barely make out what they're saying, their voices muffled behind face masks, but you know that part of your confusion is due to the medicated haze you're vying to maintain lucidity through. As you flex your shoulders and thighs, as if checking to make sure they're still attached to you, you come to the conclusion that you aren't quite strong enough to lift yourself up. Even if you could, you know you wouldn't want to. But your body can't help itself as it stirs.
One of the experimenters standing behind you--doctor or assistant, you aren't sure which--seems to notice that you've awakened. They place a gloved hand on one of your asscheeks, kneading your fat buttock like a ball of dough. You squirm a little, slowly, trying to back yourself into their grasp. They place another hand down on the other side of you, massaging your rear. Already wearing yourself out with the motions of your hips, you settle back down onto the bench. They give your ass a firm round of pats before reaching down and unceremoniously spreading your labia, nestling a pair of fingers in your pussy, and extracting them in one swift, clinical motion.
"This one's ready and vital," they say.
The doctor standing in front of you moves closer and sets a hand on your back, between your shoulderblades, and massages you in circular motions. It feels soothing. You're still so pliant, even as the drugs are beginning to wear off. They haven't administered any more gas, and you think you would've noticed if they had stuck you with an injection. Whatever they're using you for now, they seem to want you conscious.
The doctor massaging your back with his palm lowers both of his hands to your tits, uncupping the pumps from your nipples and taking them aside to a cart outside your limited view. Your eyes follow his feet as he walks away, a disappointed groan caught in your throat. If you really wanted to, with some effort, you could probably lift your head. But what would be the use? Upon reflection, you can't tell whether that was a remnant of the drugs talking or just the way you're accustomed to thinking now.
Being kept nude at all times, half conscious, and suspended in a constant state of pleasure made it hard to resist letting yourself succumb to eroticism overtaking your every thought. All the hormone-addled bliss, you think, must be altering your brain chemistry.
You can't imagine returning to a life outside of this. The thought of being used like this, pumped full of organisms to incubate between having your brains fucked out, makes you feel like you could be content with living this way forever. Docile, useful, and tended-to. Everything a good test subject could want.
You're taken from your reverie by an odd sensation. There are gloved fingertips at your opening again, pressing into the walls of your vagina with purpose and diligence. Then, in goes a thick dollop of something slick and warm, the experimenter behind you giving your insides a thorough coating of the stuff, working it deep into the tissue of your pussy.
When they finished, they began to rub your clit with one hand. With the other, they felt around some more inside of you, going deep and eliciting a weak moan from you--one of the first sounds you've made in what's felt like days.
Before you can react, the hand inside of you is replaced by an instrument. It feels long, entering you to your very depths, and wide as it slides inside of you. The person at your rear keeps fingering your clit in rhythmic swipes, made all the smoother by the lubricant and fluid from your cunt still covering their gloved hand. So messy, you think, but looking down at the sterile floor, you reckon that none of the experimenters care about mess. The results of their research are all that matter to them. Your pleasure is merely a result.
After some indistinct chatter from the still-present doctor, you feel the device inside your pussy begin to stretch, expanding the channel to your cervix like a speculum. You'd had pap smears before, you think, but none felt quite as good as this. Whatever was in that lube they put inside of you, you think it must be doing something to your nerves down there, something to make them relax. When the expansion stops, you feel wider than you had previously thought (comfortably) possible. Unable to stop yourself from closing your eyes to rest in the thrall of serene arousal, you relax again even as another new sensation is introduced to you.
Something smooth and warm is pressed against your clit, the hand stroking you off now engaging something with a click before the object at your lips begins to vibrate. The sound is unmistakably enhanced by the echo of wetness, the vibrational hum seeming to gargle as your cunt hungrily oozes onto the tool. The ministrations are starting to make your toes twitch and curl, your thighs tense as they flex. More lucid now than you have been, you hope this continues. You have to cum.
Giving a pathetic wriggle, you make an attempt to back yourself into the vibrations as they begin to rapidly intensify, but your massive pregnant belly anchors you into your position on the bench.