is Horny

"I'm a bit worried, Doctor," I **** myself not to smile as I approach her, "the flushed face, the way you're sticking your rear out, those're normally symptoms of a twerking addiction." Gotcha, I think as her legs begin to twitch.

"R-Really," she asks, panting softly, "what makes you so sure?"

"Well," I reply, "I suppose there's a few tests we could do. Normally, when a twerk addict is aroused, she can't stop herself from unconsciously shaking her ass, especially when there's a man around." The twitching in her legs stops, only for her to fully bend them, rising up on the balls of her feet and bending at the knees as she arches her back. Her hips start to shake slightly, bouncing her butt up and down. "More obviously to observers is that normally, indulging a twerking addiction makes a woman's ass grow over time. Is this your first time showing symptoms?"

"Yes," she replies in a breathy voice, as she continues to shake her hips.

"Okay, so we might not see any major change yet," I reply. "Normally, it takes a few hours of twerking for an addict's ass to reach its maximum size. Now, normally that's a big, juicy bubble butt that really claps when a girl works her booty, so don't worry about it impairing your mobility." She sighs in relief, then her head shoots up and her eyes widen with a soft 'oh' as the first growth begins, her butt swelling almost imperceptibly. "Now, normally each stage of growth is accompanied by an enormous surge of pleasure. Did you feel one of those?"

"Yeah," she sighs happily, apparently lost in the combination of her growth spurt and the chemicals flowing through her body, "yeah, I did."

"Ooh," I put on as much of a bad-news tone as I can muster as she keeps shaking what her momma gave her, "that's not good; you're definitely addicted. Normally, twerk addicts are completely unable to resist the urge to shake, bounce, wiggle, grind or otherwise show off their asses. It's normal for them to dress more provocatively, change their gait or get tattoos that draw attention to that area like tramp stamps. Normally, a twerk addict gets hornier the more exposed and **** their ass is - and the hornier they get, the more exposed and **** they want their ass to be. In fact..." I'm right next to her at this point, following her as she struts and sashays around the central console, shimmying, bouncing and wiggling her ass whenever she stands still, "...it'd be perfectly normal for you to let people to grab, spank and massage your ass whenever they want. May I?"

She glances at me as I nod towards her ass, now having grown enough to noticeably change its outline in her pants, before her gaze drops to my crotch for a moment and she forces herself to look away. "Sure," she replies, a little too cheerily, "go for it. In fact, don't worry about asking from now on, just get a big handful whenever you like!" She jumps and lets out another 'oh' of surprise, before sighing happily and thrusting her hips back to push as much of her ass as possible into my hands as I do just that, seizing a plump, perky cheek in each hand and giving them a thorough groping. "I- I shouldn't do this," she gasps, "when I'm-!" I cut her off by releasing her and then giving her a quick swat to each cheek. "Oooooooooh..."

"You're right," I tell her, "normally a twerk addict would wear a proper outfit once she knows she is one. You got anything like that?" She holds up a hand in a 'wait here' gesture and swiftly leaves the room through one of the doors set in the wall, hips swinging. After a couple of minutes she burst back in, having swapped out her top for a tighter version of the same design and her previously-baggy blue pants for a pair of yoga pants in the same colour. Lifting the hem of her shirt for a moment to show off the strings of a white thong riding up over her hips, she practically skips back over to the console and resumes her fiddling with knobs and dials.