Test Room

There hadn't been too many people on the way to the testing room, but every single one had been a hot girl, and every one had leered at AJ. Several had made comments about her, catcalling her and flirting, which AJ found frustratingly hot. Two people slapped her ass when she passed by, and both times it sent ripples of pleasure through her large rump. It was humiliating, and somehow that made it even hotter.

When she reached Room Number One, the door was open, and she entered a windowless room with a weird contraption in the middle. It looked like some kind of gynecological chair, with stirrups and straps.

Doctor Lavar entered the room behind AJ, giving her a hard slap on the rear.

"What a fantastic fat ass!" she gleefully declared.

"Doctor! You- You-" AJ turned to glare at the doctor, but was met with a towering gorgeous lady. Doctor Lavar had long wavy black hair, a huge bust that strained against the flimsy lace red top underneath her white lab coat, and huge red lips. She also wore some latex gloves.

"Oh, calm down, darling. You like it."

"I don't…" AJ tried to deny it, but her words had no conviction in them.

"Get on the chair, darling. We'll check you out, make sure you're okay."

AJ hesitated, but the Doctor's tone was stern and she felt too awkward to disobey. As she approached the contraption, turning to sit down on it, she realized that she hadn't shown any medical ID, or even shared her name. Shouldn't they check these kinds of things before strapping her into their testing chair?

"No, no," Doctor Lavar said, putting her hand on the small of AJ's back. "You gotta get on it face down, ass up."

AJ gulped down loudly, then met the Doctor's pretty eyes. She was so fucking gorgeous.

"Come on, hop in dear."

AJ followed the instructions, finding herself on all fours on the contraption. The Doctor closed the straps around all four of her limbs, causing her to panic a little.

"So, what, huh, what are the tests gonna be?" she asked.

"Shhhh, don't worry your little head about it."

AJ's stomach burst into butterflies when she felt the Doctor's hands all over her thick legs.

"D-Doctor-"

"Please, call me Mistress."

"M-Mis- What?"

Doctor Lavar pulled down her pants, revealing AJ's huge ass and making her squeal in surprise.

"What a perfect booty," the Doctor whispered before pushing her face into it.

"Doctor!"

A hard slap fell on her wobbly cheek. It hurt, but it also felt weirdly pleasurable.

"What did I say?" the Doctor's voice was cold.

"You… you…"

Another spank. AJ let out a whine. She could feel the impact rippling throughout her body, especially in her soft little dick.

"You said to call you Mistress!"

"That's right. Now try it."

"M-Mistress…"

"Good girl."

AJ gasped. The warm feeling in her chest made her wish the Doctor… Mistress would call her a good girl again.

"Now. Clearly I can see that the Elixir's effect are persisting after they should've subsided."

She grabbed AJ's dick and balls, which easily fit into one of her hands.

"Was this useless knob always this small?"

"N-No! It shrank… I think because of the Elixir…"

"Huh-huh."

She squeezed again, then went to the cabinet on the side. From the corner of her eye, AJ could see Mistress grab a bottle of lube.

"What are you going to do?"

"We're gonna test your anal cavity, see how it reacts to stimuli."

"Wait! No!" AJ tried to shake herself off the chair, to no avail.

"Relax, honey. With how much Peach Elixir you've ingested, this hole here will be ready to take anything."

AJ opened her mouth, but Mistress placed her hand on her ass, and the feeling shut her up instantly.

"Good girl."

AJ involuntarily thrust her ass backward after being called a good girl.

"Oh! Looks like we've found one of your triggers!"

She gave her a light tap on the rump, then AJ felt a cold fluid flowing down between her cheeks. Mistress was lubing her up.

"I'm going to push my fingers in, and check up on your p-spot."

"O-Okay," AJ muttered.

And then the finger went in.