This is based on the story "My Mom is a Slut" by darkride (with the author's permission).
Chapter 13
As the ladies came down from their post-orgasm high, Nathan sat beside Aaron and called Sandy to sit between them. Steven did similarly by sliding in between his mother and Ericka and placing one hand on each of their thighs.
"Little One." Nathan said, "Tell us how you first came to us and how and why you freely chose to wear your cage."
Steven and Sandy both looked over at him, looks of interest on their faces. Aaron looked at each of them in turn and then stared at the floor, fumbling with his word. "As we told you earlier, a few years after you were born, I convinced your mother to be with another man while I watched. It helped so much with our sex lives, we played off the high of each encounter for months. We used several different men over the years until your mother came to me and said she wanted to try something different. She wanted to try to specifically be with a Dom.
"I didn't know what that entailed or how this would end up affecting me. I believed I would just be watching rougher sex... Obviously, you can see I misunderstood. Eventually, we found a couple that we really clicked with; over e-mail, then text, and finally phone calls. They understood us, even more than we did ourselves." He looked up and gave a genuine smile to Nathan and then Ericka.
"It was your mother who was actually apprehensive about the couple. She didn't want 'me' to be with another woman," Aaron chuckled, "Seems so funny now after everything. But eventually, we agreed to go ahead with a meet for coffee, 'just to see how it all feels with them'.
"A few weeks later we had our first sexual encounter with the dominant couple, it was far from being a simple swap as I had half anticipated. Witnessing how excited she had been in the build-up to the meeting, and her contented sated smile after the meet, I knew that a second visit was guaranteed.
"On our second encounter, the control over Maryanne had continued, and the bisexual nature of both Master and Mistress very much pressed to the fore as I found myself sucking the second cock of my life." Aaron paused and blushed watching the rapt attention of his children on him. "Not just cleaning it after Nathan had fucked my wife, Master had guided me into giving him a full blowjob. The night did leave me excited as Mistress had administered enemas to us, before plugging our asses." He said patting Sandy's hand as she also just experienced all that.
"Feeling another woman's intimate touch on my body for the first time gave me somewhat of a taste of the pleasures that my wife had been enjoying, even more so when Mistress Ericka had caressed my cock whilst playing with the plug, though being very careful not to let me cum. On this second meeting, as I watched Master fucking Maryanne, Ericka had allowed me to lick her pussy. My hesitancy was anticipated by the dominant couple. 'Tell him', Master commanded her. 'Tell him to eat my wife, his new Mistress.'
"Hearing my wife repeat the command, telling me to lick another woman's pussy, made my cock leak on the motel floor as I buried my face in Ericka's excited sex, and I felt her hands eagerly gripping my head to guide me." He then smiled at Steven, as he'd just experienced that.
"I became lost in Ericka's pussy as I explored only the second vagina of my life, finding myself using various parts of my face to pleasure her as she continued to guide me where she wanted me, including at times down to her ass as she lifted her legs higher and tilted her hips for me to have better access. Tonguing an ass was not something I had ever anticipated doing, but in that moment, I didn't hesitate for a second.
"When Mistress started shaking, I knew I was performing my task well, but the explosive ejaculating orgasm that followed caught me by surprise. Mistress Ericka pulled me up and kissed me hard on the lips, tasting herself on my face, before turning me on my side to watch the other bed.
"In the entirety of my marriage, Maryanne had only once let me try to put my penis in her ass." Aaron stopped for a second to contemplate the absurdity of telling his children all of this, but catching Master's eyes boring into him forced him to continue. "The attempt had lasted just a few seconds before she stopped me with a resounding 'Nope!' We eventually settled on a single finger, slipping inside during oral sex as being the limit to Maryanne's anal aspirations. And yet at that moment, on only our second meeting with this older couple, My wife was taking Master's cock in her ass. And whilst her face was not one of pure bliss, neither was she crying out in pain as she had done with my small cock.
"Instead, the whimpers coming from her mouth were clearly not too distant from the sounds she had been making taking Master's cock in her pussy the first time when he had stretched her around his cock.
"As I continued watching, Mistress Ericka's lips found my ear. She said, 'I think your wife just learned that bigger cocks are better for asses as well as cunts...'
"Her fingers started teasing the plug in my ass as we watched. The lube inside my rectum helped the plug to slip and slide to her direction, and it rubbed on my prostate, I dribbled on the bed. It was a humbling experience watching this older man in such total control of my wife and in such a fast fashion. Mistress cooed in my ear, asking me if I wanted to cum? She asked if I wanted to suck Master's cock again? And I agreed without hesitation. I could barely control the words that came from my mouth. I agreed to suck Master's cock when he had just finished fucking my wife's ass. It seemed it very much wasn't just Maryanne who was being controlled by the couple as I cleaned Master and my wife after they came together.
"But, it was the third meeting that had changed everything for me. Three motel encounters over three weeks and my relationship with my wife was changed forever. The enema and plug had almost felt normal. Seeing my wife fucked by the older man's bigger, thicker cock by then seemed natural, if still very erotic. But on that occasion when I again dove into Mistress Ericka's pussy, it wasn't Maryanne's ass that was de-plugged, and then refilled with living flesh. It had been my plug that popped out, and my virgin ass had accepted Master's cock, as his wife watched every moment. I felt ashamed that my wife had struggled far less in taking Master's cock in her ass than I had, even though Master was clearly taking his time with me.
"When Maryanne had told me that she wanted to try a dominant guy, this was not what I had pictured, however as I half lay, half knelt on the bed, with my face still pressed into Ericka's wet pussy, and a 50-something-year-old cock deep in my ass, I knew there was no going back. Mistress Ericka's inquisition of Maryanne as she watched me accepting the first cock into my ass, made sure I knew that Maryanne's eyes were firmly on us, much as I had stared at Master fucking her ass during the previous encounter.