(This part of the story is in the BDSM category because Robert, Emily and Becky have elected to try to become involved in a Master/Slave and Mistress/ Slave relationship. However, not to ruin anything for you, the actual situation is one of all three agreeing to play this role and it never reaches anything too severe. There will be no bloodletting and no extreme pain.)
I was really excited by Becky's revelation of her submissive desires and, in truth, her confession made me realize that everything Robert and I had done to this point was because I was also submissive to Robert. He got me to admit my desire for another woman, he set up the camera and the idea of my advertising for a woman and he took me to the adult store and "made" me make those purchases and "made" me dress like a slut for that entire day. So as he returned to the bed with his leather belt, I was so pleased that we had both recognized the obvious, that I wanted to submit to him and that he was comfortable in pushing my "slut" limits. I quivered as he snapped the belt in the air over our heads.
"Sluts! At this time we are going to have a little quiz and when you fail to answer correctly you will feel true pain. If you answer correctly you will feel loving pain. Are my sluts ready?"
"Yes Sir!"
I said and then listened as Becky moaned and said.
"Please, Sir!"
From the sounds she was making, Becky was already developing an orgasm due to her situation. I knew then that she was more prepared than I was for what was to come. I wondered if she had already had some sort of discipline in the past.
"Slut Emily! What do you want?"
"I want..."
I never finished my sentence as Robert's belt smacked into my left ass cheek and I winced and stifled a cry of surprise. I felt the sting. It would always be memorable for me, my first taste of discipline but it was not severe.
"Let's try again Slut, what do you want?"
"Master, this slut has no wants for herself. It is this slut's desire to obey you Master."
This time the belt hit my right ass cheek hard but not as hard and a tingle in my cunt let me know just how right this was for me.
"Slut Emily, what shall I do with your body?"
"Master, if this slut is good, I hope you will use this body to please you."
With another touch of the belt back on the left ass cheek and another contraction in my cunt, I felt my nipples grow hard.
"Tell me slut, what about your slut, what will you demand of her?"
The belt slapped into my ass once again.
"I will train my slut to please us both. I will demand that she submit to you, to take your cock, to please you as you see fit."
As I spoke those words I knew that I was truly committed to serving my Master. Since the onset of our relationship and throughout our marriage, his cock had only been mine. Now I was agreeing to willingly share that wonderful cock with Becky. I had no regrets. I had only the desire to see Robert command me.
"You have done well, Slut Emily. Now I will soften up that ass of yours and you will keep count. You are to receive ten lashes, but if you lose count we will need to start from the beginning.
"Yes, Mas..."
The belt landed on my ass and I yelped. By the time I thought to say one, the belt landed again. I knew I had to be quicker.
"One, Master."
Each time, I repeated the phrase changing the number as soon as the belt struck. In total, I had eleven due to my own forgetfulness. When another blow came I wondered what I'd done wrong and then I recalled from my reading of BDSM that I needed to thank him.
"Thank you Master for showing this slut the discipline she needs."
One more swat and then I felt Robert's fingers in my dripping cunt. I said nothing as he probed inside me, feeling my need, enhancing my arousal. My tits ached as my nipples were unbelievably hard. I felt Robert leaning on me, his breath now in my ear as he whispered.
"You need to deal with your slut, Slut. If I think you're going easy on her, I will give you twenty hard ones on your ass, ten on your tits and five on your wet cunt. Do you understand me Slut?"
The feel of his breath in my ear and the words he spoke only excited me and I squirmed on his hand before I answered.
"Yes, Master. I do not intend to displease you, Sir."
He pulled his hard hot fingers from my wet needy pussy then grabbed me by my hair and pulled me off the bed. He handed me the belt and nodded at Becky's now quivering ass. It was obvious that what had transpired between Robert and I had only further excited her.
I took the belt and whipped it down on Becky's unsuspecting ass and she groaned and said.
"Thank you Mistress. Your slut is grateful for your firm hand."
"Oh you are a canny little slut! This isn't your first experience with a belt, is it slut?"
"No, Mistress. My father used a belt on me all the time. He believed in corporal punishment."
"Tell me all of it, slut."
I used the belt in two successive swipes, her ass reddening such that I first thought I was using too much force.
"Mistress, he was only punishing his daughter for her lack of maturity. He was not sexual, he never spanked my bare ass but I always found myself in my room later masturbating as I sat on the harsh carpeting in my room so my inflamed ass rubbed on the carpet."
I used the belt a few more times. Becky's pussy was dripping and her nipples grew so large her tits looked even smaller.
"How old were you, Slut?"
"My father would use his belt to spank me, to punish me until I was eighteen. You know - for breaking curfew, speaking back to my mother, all the typical kid stuff. After puberty, once my pubic hair grew in and my breasts began to form, I used the pain to cum, Mistress."
" What made him stop when you were eighteen?"
"The last time, he went pretty hard on my backside and I felt it even through the jeans I was wearing. I'd been yelling at my Mom when he came home and he was a bit furious at how I was treating her. As I said, he went after me pretty hard and eventually I heard my Mom telling him that "enough was enough" and he stopped. He told me never to speak to my mother like that again and to go to my room."
I was into Becky's story but knew that there was more to tell, so I slapped her ass a few times with my hand and asked.
"Then what happened?"
"I tried to sit down in my room and my ass was on fire. I could feel my pussy was damp and at first, I just rubbed it through the jeans, then I opened my blouse and caressed one of my barely developed tits. Inside, I wanted more and so I opened my jeans and slid both them and my panties down to my ankles and sat down on the rough carpeting in my room. The fire erupted in my ass when I did that and I pulled my knees up and spread them wide. I put one hand on my pussy, the other back on my tit. I started to stroke my self, to masturbate and an orgasm was coming so soon, so easily. I closed my eyes and used my fingers, one to penetrate myself and another to massage my clit. My other hand was pulling my tiny nipple and twisting it, the pain adding to the one in my ass. I closed my eyes and I used my fingers to fuck my pussy as fast as I could."
Becky went quiet then so I slapped her ass and said.
"Finish slut!"
"I guess I forgot to lock my door because as my orgasm hit, I opened my eyes and there was my mother staring at me, staring at my fingers buried in my slit. I felt humiliated that anyone, much less my mother had watched me cum. My orgasm intensified knowing she was watching me but I tried to cover myself. My mother spoke to me."
"No, let yourself finish Becky. What your doing is natural for you, I'm sorry if I interrupted you but you just looked so lovely when you came."
"So your mother watched you cum?"