Notes:
All characters are over 18 and purely fictional.
Our mom had become such a slut. I mean, we realized that she'd always been a slut but it had gotten worse since dad divorced her and took everything except us three kids. We had to move into a cramped two-bedroom apartment; she took one room and we took the other one.
"We" consisted of my sisters and me, triplets. We had the same mother and presumably the same father but there was some question about that. I was the fraternal one with thick black hair, while my sisters were identical. We'd heard about two eggs with one splitting into two babies almost since we were born. My sisters got mom's best attributes -- strawberry blonde hair, freckles. Kiki (yes, that was her real name) and Eliza had 34 D chests. I know, because we were now sharing one chest of drawers and one closet and one washer and one dryer so our clothes, including underwear, all got mixed together. There was a clothes basket full of clean clothing sitting outside our closet door right now, clothes spilling out, and clothes stacked in our closet to the point that they were falling over. By the time we all turned eighteen this year, their hips and asses had gotten as big as mom's. They were positively and classically hourglass shaped.
Our tight quarters had not one, but two sets of bunk beds. The girls slept in one, Kiki on top and Eliza on the bottom. Our living arrangement was so new that Eliza would hit her head on her sister's bunk and Kiki would hit her head on the ceiling. The other set had my bed on the top and I hit my head too. In my bunk bed, we'd thrown out the bottom mattress and put a door on the frame and hooked up our flat screen TV and video game consoles. We had several. Tonight, we were playing a retro game of Mario World, trying to make Mario run upside down and around and stuff. It was late, after 11:00 and the only light was the green and blue coming from the TV. The girls were sitting cross-legged while I had my legs stretched out in front of me to play.
My sisters liked to dress alike sometimes. Tonight, their pajamas were the same but that's mostly because they couldn't see the point in getting new ones. Both w0re short-sleeve cotton shirts with v-necks and shorts, white with strawberries all over them ("like our hair"). They'd been bought while they were in the middle of puberty so the shorts were too small for both of them. I'd sneak a glance to see the half-moons of their asses rubbing on the carpet where they were sticking out through the bottom. That tight white fabric on their pussies let me see their mounds pushing against the fabrics, red hairs poking out the sides. When they had bought them, Eliza, on my left, had her tits fully grown so I could look down in the V-neck and see her nipple and areola. Kiki, on my right, had not been fully grown and got a size smaller. I couldn't look down her shirt but I didn't need to since her tits were straining against the fabric, the shape of her nipples obvious. I was dressed in pajama pants, loose enough to not show my junk off. I wasn't wearing a shirt, my pale skin showing my lean yet fit frame.
Eliza was kicking our ass when mom came home. There was the sound of her high voice and a low gruff one we didn't recognize. Then the sound of clattering in the kitchen as she made the deep voice a "night cap." There was some conversation for about fifteen minutes. The three of us were listening, throwing us off our game, and, shortly, all three of us died. We didn't bother to restart, just sat there listening over the sound of the digitized music. Mom's bedroom door slammed shut and we heard her and her "date" fall onto the bed in her room next door. The walls were paper thin so we often listened to our mom fuck. If we were in bed, we'd pretend to be asleep and masturbate. It was hard to hide anything we were doing in such a small room - we all had stopped eating beans because of the gas -- so all of us knew what the others were doing but never mentioned it. It was kind of an unspoken agreement.
There was murmuring from the room then the gruff voice got louder.
"I think she's blowing him," Eliza said.
"Probably," I said, muting the TV. Then, "Yeah, I thought I heard the sound of her gagging."
"I love that sound," Eliza responded. Kiki and I didn't say anything for a second, just digested this.
"I know," I finally said. "I can hear you stick your fingers in your pussy when you hear it." My blonde sister looked at me in shock, mouth agape; I had just broken our unspoken covenant. "Or is it a dildo?" I asked. We all masturbated when we were together in our room (we didn't have a choice), but this was the first time we had ever talked about it.
Eliza finally managed to answer. "None of your business. For your information, I can hear you jacking off too."
"Sometimes I hear you gagging, too. That can't be your fingers. What is it?" I shot back. Eliza just stared.
Kiki had been quiet and obviously getting more excited. "Wanna see something cool?" she asked.
We both turned our attention to our sister in the tight shirt, glad to have her cut the tension. Kiki had a big shit-eating grin as she used the remote and changed the input on the TV.
"What's that?" I asked as the picture, lots of black and green, came into better focus.
"Holy shit!" Eliza said. "It's mom." Sure enough, on the screen as we watched, our mother, completely naked, huge tits even bigger than her daughters' on display, got up off her knees and onto her bed on all fours. Her date got behind her and, holding his dick to line it up, pushed it in and started fucking her. We could hear the slap of his hips on her big ass through the wall while we watched them on the TV.
Soon, mom was getting into it. "Oh, yeah, fuck my ass!" she screamed, apparently unaware that we could hear them, much less see them.
"He's fucking her ass?" Eliza said, sounding disgusted.
"Don't knock it till you try it," Kiki said, then covered her mouth in embarrassment.
"You've had a cock in your ass?" Eliza said, looking over at her sister. My eyes were glued to the screen where our mom obviously had one.
"Well, not a real one," Kiki started. "Have you had a real cock in your mouth?"
Before Eliza could answer, I cut in. "Think that's Brian?" I asked, referencing one of our mom's boyfriends.
The two blondes looked closely at the screen. "I think it's Sean," Eliza said.
"Mike," Kiki chimed in.
"Could be Miguel," I continued.
"Oh, Joe, fuck my ass!" mom yelled.