Procedure
#3 of Companions, Inc.
*** Tuesday, 3 PM, Companions, Inc. Testing Center
The thin paper gown crackled as Lenore shifted uncomfortably. She was seated on the kind of hard raised bed present in every doctor's office, with Dr. Vert in a much cushier-looking chair across from her. "Now that we've finished all the written questions, it's time for the physical diagnostic portion. You've stated that your Companion will be serving a sexual role in addition to more general tasks. In cases like this, we have a procedure for finding the ideal size of your Companion's... ah, anatomy. I'll leave you to it- the process is mechanized, to minimize discomfort. Just step through that door there when you're ready."
She nodded, and he left, taking the ever-present clipboard with him. As soon as she heard the click of the latch, the eager palomino stood, moving toward the door he'd indicated in hopes the next room would be a bit warmer.
It wasn't. As she stepped into the sterile chamber, a shiver passed across Lenore's flesh and her delicate pink nipples rose. With a click and a hum, the overhead lights flickered to life.
"Please remove the gown and place your paws, feet, hooves, or other appendages on the indicated areas," instructed a cool female voice from a speaker in the corner of the small white room. Lenore took off the unpleasant garment and, seeing a stainless steel table at about waist height before her, folded it and placed it on top. Looking down, she saw the "indicated areas" the speaker had mentioned: stylized yellow paw prints were painted on the floor before the table. The spacing was a wider stance than she was used to, so she was relieved when the speaker continued, "Bend at the waist and rest your upper body on the table. If you have a tail, please move it up and to one side. The Procedure will begin momentarily."
The mare wasn't entirely sure what this "procedure" was going to entail, but she had a pretty good idea, from what the doctor had said about sizes and anatomy and from the position she found herself in now: bent over, displayed, legs spread.
With a metallic clunk, a hatch in the ceiling opened. A metal arm lowered itself, then unfolded to reveal a ribbed, stylized phallus. It wasn't any particular species, and it wasn't very big- certainly not as big as Hero. As it lowered, the voice issued from the speaker: "Size 5 Standard test, begin." At these words, the dildo squirted a bit of purple, viscous lube onto Lenore's entrance, and began.
It thrust five times- she counted- and then withdrew. "Size 5 insufficient. Size 7, begin." A few seconds later, the mare looked over her shoulder and saw a bigger phallus- seven inches, as the size number indicated. She knew it wouldn't be big enough, either, since her favorite toy was closer to 13. As large as she was, it took a lot of cock to make her feel good, and still more to fill her.
Size seven, too, thrust only a few times before withdrawing. "Size 7 insufficient. Size 10, begin." This was much better, thought Lenore as it entered her lubricated passage. The machinery was not gentle- it slammed into her, hilting the dildo with each rapid but predictable thrust- but the ribs were starting to feel pretty good when the voice interrupted. "Size 10 insufficient. Size 12, begin." This one was better still, as the much thicker shaft plunged into Lenore. She rolled her hips, humping back against the invading silicone, but soon it too pulled away. Moaning in dismay at being suddenly unfilled, the palomino swished her tail impatiently. Deciding that the dildo switch was taking too long, she tried to move one hand to pleasure herself- and found them bound to the table by narrow metal bands around her wrists. "When did-" she began, but the cool female voice was already continuing, "Size 14, begin."
The head of Size 14 had only the slightest taper, so when it pounded into Lenore it knocked the breath from her. Without giving her time to recover, it continued brutally, slamming in and out of her passage, making lewd slurping sounds. A mix of her own fluids and the purple lube slid oozingly down her thighs as the size 14 fucked her without mercy, and soon Lenore was crying out, sliding what little ways the wrist cuffs allowed to meet its thrusts, her inner walls convulsing around the ersatz penis. Abruptly, this one too withdrew, to be replaced by Size 15. It took up where the last had left off, but her moans came louder. She writhed under the machine's impersonal invasion, helpless in the throes of her artificially-induced passion.
"Stimulation has reached critical levels," stated the voice, and the phallus began spurting wildly inside the mare, ropes of purple goo spilling from her nether lips as its steady, hard rythm continued, forcing the mingled juices and lube out to drip in rivers down Lenore's thighs. Spasming and neighing in triumph, she came hard as the cold, alien member inside her simulated orgasm.
Then, as abruptly as it had entered her, it pulled out with a slurp and retracted into the ceiling, leaving an exhausted, panting femme draped across the steel table. With a click and a whirr, the manacles retracted, and she slumped to the floor, still oozing mixed fluids.
"Well. I guess Size 15 is sufficient," she said, with a breathless laugh.