Your final "practical" exam for Breeding 101.

Click! Click! Click!

Professor Jennifer's heels had clicked somewhere behind you. You remember straining against your restraints to try and see her but were unable. You were bound tightly on your hands and knees in one of Master's favorite positions. Apparently it was called "Doggy Style" in the old Terran language. Your legs were were spread wide and locked at the knees to the padded table beneath you. A leash held your face forward by your collar attached to a mount at the front of the table. Your rested on your elbows with your wrists bound to the same mount in front of you. You gripped small hand holds on either side of the mount and prepared.

From the corners of your vision you could see other girls in identical positions on either side of you. Somewhere in the room, Yoshino was also strapped to an identical table. All of you were preparing for the ordeal of the final exam. Throughout the last several weeks, you applied the various techniques you had learned to accommodate larger and larger dildos into your surgically tightened pussies. Master's law forbid the use of any object as large has his phallus in a training session, but that was not much of a consolidation. The final exam phallus would be over an inch and a half in girth and ten inches in length!

Don't forget anything! You remembered thinking to yourself. Even while bound there were plenty of techniques to apply to assist... maybe even make this fun.

1. Use your arousal. Your pussy juices were critical to assist the shafts journey inside of you! Additionally, you remember that a woman's vagina increased in depth if she was fully aroused.
2. Relax your pelvic floor muscles. As a concubine, Kegel exercises had been among your most rigorous daily exercises. It was important that you be able to relax on command to accommodate Master early in the coupling exercise. It was equally important that you be able to tighten your grip for your mutual pleasure later in the exercise.
3. Adjust your position. By shifting the arch of your back, you would be able to change the angle and align his thrusts. Done correctly, you could maximize his penetration and your pleasure. Done incorrectly, he would bottom out painfully against your cervix.

A girl next to you gasped. You remember not being able to see what had caught her off guard.

"Uhh!" a gasp escaped your own mouth! Professor Jennifer's hands had pulled your shaved pussy lips apart and had positioned the wide dildo against your womanhood. You couldn't see from your position with your neck trapped on the leash, but you had been through this experience with smaller instruments earlier in the class. Behind you, the phallus would be mounted to a robot piston at the foot of the table. The piston could be expanded to **** the dildo further within you at the command of the instructor.

"Alright, girls!" Professor Jennifer shouted from somewhere in the room. "Do not forget your training! Let's begin!"