An important part of enjoying the experience of being a naked sex slave is having an owner who knows what the hell they are doing.
I wasn't thinking about that at first, but I was learning.
Despite her lack of experience, Lexis was doing a superb job when it came to supervising me, evaluating my responses to external stimuli and understanding the inner workings of her slave. When our friend Beth came over, there was a huge jump in my sexual arousal. Lexis observed how I acted differently when Beth was around, and rather than simply becoming jealous, she decided to follow up, to find out what was going on inside my head.
Beth treated me like I was still a high school student. She would quiz me on my knowledge of American and European history, and she would punish me if I didn't do well. It was astonishingly potent stuff for me. Being told to do better by a stern, demanding schoolteacher and suffering consequences for my failures overwhelmed me with a tidal wave of emotions, making it hard for me sometimes even to breathe.
I couldn't deny it, not to myself. I was twenty-two years old, but I wanted to be treated like a naughty schoolgirl. I wanted to be given homework and forced to take quizzes and punished if I didn't learn the assigned material.
But it felt too weird to talk about, so I tried to stonewall my sister, tried to get her to leave it alone. She wasn't having any of that. Lexis knew how to extract answers, no matter how confusing and embarrassing they might be.
"Up against the wall," Lexis demanded. "Assume the police search pose."
I turned and faced the wall. I leaned forward, lifting my arms and pressing my palms against the vertical surface in front of me, balancing on the balls of my feet with my ankles as far apart as my shoulders. It was a pose that already made me feel painfully exposed and vulnerable.
"Feet further back and wider," Lexis snapped. I adjusted my position, and felt even more shamefully exposed.
My sister slapped me hard on the ass.
"Wider than that."
I whimpered as I repositioned myself again. I made myself as agonizingly vulnerable as I possibly could. Naturally, I assumed that my sister intended to whip me until I finally surrendered and told her all the embarrassing details. My legs trembled as I held them obscenely far apart and waited for the sting of the whip.
The tone of her voice and her stern attitude commanded instant obedience and distracted me from the fact that she wasn't holding a whip, or a leather strap, or any sort of punishment implement. Instead of the sting of leather across my bare buttocks, I felt Lexis's fingertips stroking my swollen pubic lips.
"It's been a while since you've had an orgasm, hasn't it?" she purred in my ear. "I'd be willing to bet your pussy is starving for some attention."
I tried to say something in response, but my throat constricted, and my vocal cords just didn't seem to work. I opened my mouth to speak, but all that came out was a raw moan.
My legs wobbled. I tensed up, clenching my buttocks as Lexis worked two of her fingers into my pussy. She probed my wet, throbbing sex, searching for responsive nerve endings. Within seconds she had me squirming and making inarticulate vowel noises.
"Oooooh, Uuhhhhhh, Aaaahhhh."
"This is fun," Lexis said cheerfully as she pumped her fingers in and out of me. "I could do this for hours!"
My body soon became feverish, overheated and overstimulated. My sister's fingers probed deep into my vaginal cleft and another agonizing wave of desire passed through me, making my legs twitch, my nipples swell with heat. I whimpered and panted as Lexis's fingers explored my sensitive interior and my poor sex throbbed again with hungry spasms.
I could feel her fingers inside of me, exploring my moist interior. They delved deep and her fingertips prodded, searching for areas that were especially sensitive or receptive to being touched. Every time she found a spot that was sufficiently sensitive, I would moan and whimper and struggle to hold myself in the position she had ordered.
She smeared the wetness over my mound, then felt me from front to back, parting my labia, moving a finger along the moistened cleft. Then, in a throaty purr, she announced, "you're soaking wet."
My voice was weak and shaky, but I somehow managed to reply, "Yes, mistress."
Naked, with my legs spread obscenely far apart, and my sister impaling me deep with her strong, forceful fingers, I felt completely helpless and vulnerable. My clit was so hard and swollen that it ached, and my loins were feverish and throbbing with an urgency that bordered on frantic.
Lexis penetrated me with her fingers, over and over. She'd start with just one, then two, then three fingers. My legs trembled as I felt a powerful orgasm building inside of me and then she'd pull out. She'd withdraw her fingers from my sopping wet hole and move further back, brushing her fingers across my perineum, smearing my juices against my exposed anus.
"Want me to go back to playing with your pussy?" Lexis asked. "Want me to make you cum?"
I couldn't seem to get my voice to work, so I nodded my head vigorously to indicate my desire for an orgasm.
"You have the power to make it happen," my mistress whispered softly in my ear. "Just tell me what gets you so hot and bothered every time Beth comes over. Do you have a crush on her?"
I inhaled deeply. My throat felt tight, but I needed to get words out if I was going to end this erotic suffering.
"Not exactly," I replied, my voice strained.
I took a few more deep breaths, trembling as another agonizing wave of desire passed through me, and got the words to flow. "Back in high school the teachers let me get away with being lazy and irresponsible. I guess having rich parents made them afraid of me."
There was another long pause as the strain in my inner thigh muscles almost caused my legs to buckle. Once I regained my composure I continued, "I never gave it much thought before but when Beth quizzes me on stuff I was taught back in high school and punishes me for doing poorly, it's like I'm back in school. And it's...It's like I'm being punished by every teacher I ever had for being lazy and not giving a damn about my studies."
Lexis rubbed her fingers up and down my pink slit. Then took hold of one of my swollen, sensitive pubic lips, pinched it cruelly and said, "Seriously? That's what's been getting you so turned on?"
I gasped, shuddered, and nodded my head in agreement.
"Call it a penance fetish," I said through clenched teeth. "My psychiatrist said that my problems stem from deep seated feelings of guilt. With Beth acting as an avatar for every teacher I've ever wronged I can finally do penance for years of being a horrible student."
My sister took her hand away from my crotch and whispered, "So, you don't just crave punishments. You crave punishments for very real offenses that you committed while enjoying a life of privilege...like being a disrespectful and lazy schoolgirl."
"Some of my feelings of guilt have been buried extremely deep," I admitted. "I didn't even realize that I felt so bad about being a crappy student until Beth started punishing me for it."
Lexis didn't make fun of me for having a desire to be treated like a naughty schoolgirl. After my admission, she understood that the more I felt I deserved punishment, the more intense my emotions would be when that punishment was meted out. Clearly, I was carrying around the crushing weight of accumulated guilt for years of being lazy and disrespectful to my teachers in high school.
"I suppose you've held up your end of our agreement," Lexis allowed. "It will take some time to put this information to good use, but in the meantime, you've told me everything I wanted to know."
Having said that, Lexis placed her hand once more between my widespread thighs. Her fingers slid across my slick labia and clitoris, making me whimper as she played with me. I bit my lower lip and tried not to cry out like a libidinous slut.
I failed.
My sister's fingers moved aggressively inside my pussy. The sensations were overwhelming, and I began to pant.
"Aghhhhhh...Ah, ah, ah!"
Spasms echoed through my body. I moved my hips erratically. I jerked and jerked again, at least a dozen times more on the way to my climax. My desperate panting became frantic, libidinous screaming.
"Aahhh! Aaahhh! Aaaahhhh! AAAAAHHHHH!"
And within seconds a long rolling finish commenced, my pussy tightened and relaxed, tightened and relaxed again, until I languished into a gentle, unthinking calm.
* * *
Lexis had hinted that she would use the information she had learned about my penance fetish to effective use, but as the days went by, she didn't mention it again and my life as her slave seemed to return to established norms. At some point I just assumed that my sister had lost interest in exploiting my feelings of guilt for being a naughty schoolgirl.
Yeah. As you may have guessed, my assumption was wrong.
Lexis put a lot of money and effort into Project Naughty Schoolgirl. She just kept the details from me until she was ready to fully immerse me into it.
One morning, when I was down in the laundry room doing menial chores, Lexis sauntered in and announced, "Time for you to get dressed, slave girl. You and I are going on an adventure."
Lexis refused to elaborate; she was very cryptic. She just told me to get dressed and get in the car. The clothing she handed me should have given me a clue. She made me dress like a Catholic schoolgirl. Okay, the skirt was a little bit short for a Catholic school dress code, but the skirt was pleated and plaid, there was a button-down shirt, saddle shoes and white socks.