We were invited to our parents' place. They'd have their 35th wedding anniversary in a few days, so it was a very special occasion.

My sister Cindy and I arrived almost at the same time, as we had done so often when we still lived here.

She screamed as she saw me and hugged me like a mad woman, just like the old times. At 33 she didn't look it. Almost no one in our family looked their age. People often estimate me to be 25 instead of my 31 years.

"Little brother!" Cindy smothered me with her embrace. "Long time no see!"

"Hey wild one, " I said once she let me say something. "True. How are you these days? And what have you done to your hair?"

Cindy always had long, brown, beautiful hair. Now it was barely reaching her shoulders.

"A stupid thing. I had someone cut it. Still sorry I did that, but it will grow back." She ushered me in so I could say hi t o our parents.

Mom and dad were happy to see me. Mom instantly made me feel guilty for not showing up for months. I promised to do better from now on, and no one believed me, of course. I always promised, and it never worked.

Several other family members had also arrived, and the afternoon went by quickly. There were so many people to talk to, to catch up with, and Cindy was almost always with me, dragging me from one to the other.

Some folks joked, again, that we looked like a newly married couple, the way we clung together. That was Cindy, though, she had the big sister bug and it showed.

Dinner was a fun affair, with a barbecue outside, and lots of fun and laughter. many older uncles and aunts wanted to know if I was ever getting married, and they asked the same of Cindy, but we both had no real plans for that. Or people to get married to, for that matter.

The four of us, mom, dad, Cindy and me, sat outside after everyone had left for their hotels and such.

When Cindy yawned, mom said she'd prepared the sleeping arrangements like always. Like the old times. My sis hugged everyone and said she'd see us again. "I'll try to catch up on my beauty sleep, " she joked, and left.

Not much later I got up as well, wished my parents good night, and went inside.

Cindy was already on the bed, reading something. "Hey, " she said, putting her book aside. "Like the old times, huh?"

"Very much so, " I said, taking her in. She looked stunning. Long legs, good hips, a nice waist, and the rest of her was fantastic as well. "You're pretty in pink." The bra and the panties accentuated her shape perfectly.

"Thank you. I hoped you'd like it."

Cindy and I had always shared a room while we lived here.

As I stripped down to my boxers, she kept watching me. "You're keeping in shape, little brother."

I told her I liked staying this way. "You're not sagging either, sis."

She huffed. "Just because I'm lying here. Gravity is getting to my boobs."

I thought they were great and she called me biased. Which I was, but why not?

I plopped onto the bed next to her. "Just like the old times, " I said.

She grinned. "This never gets old. Like us."

I put a hand on her thigh. "Nice to feel this again."

Cindy agreed and told me it had been too long ago. She even suggested setting up some kind of planning or schedule for getting together. That didn't even sound weird.

My hand slipped over her leg and landed on her panties. "Very soft."

She smiled. "You should feel under them."

As this was an invitation I would never resist, I slipped a finger under the fabric and found her smooth skin. "Still shaving, huh?"

"Always, " she said, and sighed as I stroked the softness.I plopped onto the bed next to her. "Just like the old times, " I said.

She grinned. "This never gets old. Like us."

I put a hand on her thigh. "Nice to feel this again."

Cindy agreed and told me it had been too long ago. She even suggested setting up some kind of planning or schedule for getting together. That didn't even sound weird.

My hand slipped over her leg and landed on her panties. "Very soft."

She smiled. "You should feel under them."

As this was an invitation I would never resist, I slipped a finger under the fabric and found her smooth skin. "Still shaving, huh?"

"Always, " she said, and sighed as I stroked het softness. Slowly she reached out and put her hand around my nearly stiff cock. "Keeping this in shape too, aren't you?"

"As well as I can."

For a few minutes we played with each other in silence. Then I reached over with my free hand and pulled the flimsy bra aside, exposing her soft boob and the dark nipple.

"Nice as always, " I said, cupping the warm mound on her chest.

Cindy grinned as she rubbed my dick harder. "I can only agree."

Gently I flicked the nipple.

"Hey..." Cindy grinned again. "That was nice." And so I did it again, also because she squeezed my dick each time I played with her nipple that way. She let me go and shoved her hand inside my boxers, grabbing the hard member for real. "Again?"

Another flick. Another squeeze. I didn't know if she did that as a reaction to my teasing but it was nice.

I pushed her panties aside and moved my hand a little. I wanted to see her pussy, explore it with my eyes as well as my fingers.

"You never change, do you?" Cindy asked. "And please say you never will."

"No. I'll never change. You know I'm addicted to your body, sis."

Playing with each other was something we'd done since as long as we could remember. Touching each other, appreciating each other's body, making it want more, teasing each other to the limit, it was all part of the play. We knew it was considered weird, but as long as only the right people knew, we didn't care what the rest of the world thought of it.

Cindy and I were so close and used to each other, that we had big issues finding lovers and partners. Each of them would have to compete with what sis and I had, and that was something of an unfair battle for any contender.

"Can you make me cum?" Cindy asked. "A quicky? I'm a bit done with waiting."

"Of course, " I said, and with one hand and some help from her I pulled her panties down to her knees, after which I leaned over and started the serious pussy play, teasing her between the soft lips, wetting a finger inside her, lightly dipping that moisture over her clit. It never failed to make her twitch and moan.

"Oh my god, yes, that, " she sighed as she spread her legs as far as her pink undies allowed.

I pressed my palm over her pussy and gently rubbed it, stimulating as large an area as I could. Hearing her sigh and feeling her hips twitch was a big prize, even when she let go of my dick. I noticed Cindy's breathing getting faster. She was close to coming and she wanted it fast, so I worked her clit just a little more. I loved playing her body like a musical instrument, and quickly brought her to the finale.

She was still squirming when the bedroom door opened and mom came in. She wore a very sexy see-though gown and nothing underneath it. "Oh, good, you already started, " she said. "It took a bit longer to get dad to bed."

At 54, mom still looked amazing. We loved having her with us and I hugged her as she got onto the bed with us.

Mom smiled as she saw how Cindy came down from her orgasmic high. "You did a good job, son, " she complimented me as she reached for my boxers. "Let's get those off you. They're only in the way."

I got the garment off and lay back. This was always the opening, where mom would take my hard-on in her hand and slowly lick the head. The timing was perfect, because Cindy had time to get herself together again.

"Your sister made you wet, my boy, " mom said, and started licking up my precum. Her grip was firm and her tongue knew exactly what to do to make me even harder.

Cindy sat up and took off her pink lingerie, then she reached around mom and began fondling her big boobs. "We sucked on those when we were little, " she said.

"Oh yes, you did, and you were greedy little buggers, " mom said, after which she resumed sucking my dick, deep-throating it a few times like a professional. After a while, mom sat up and told Cindy to sit on me. She loved seeing how my sister would take my dick inside her, and while Cindy got into position, mom took off her thin gown.

Cindy held my wet cock until mom was resting her head on my stomach, so she could see everything up close. Only then did Cindy push my dick between her legs, rubbed her wet lips a few times, and sat down on it. Slowly.

"Oh, look at you two naughty kids, " mom said.

Cindy slowly rode me. Mom got up and leaned over to suck my sister's nipples in turn. The feeling of my dick being used the right way, by the one who knew best, was crazy hot, and seeing our mom driving Cindy nuts with her nipple-play made it even better.

After a short while, Cindy got off me. "Your turn, " she said. "You've probably gone without for a long time." She kissed mom, who then swung a leg over me and took my dick in her hands.

"I love how wet it is from my little girl, " mom said as she rubbed her pussy with my dick. After a while she shoved it inside her and sat down on me, closing her eyes and enjoying the feeling. For me it was always a sensation to fuck mom. To give her back something after putting Cindy and me on this world.

Cindy sat down on my legs behind mom and reached around her, playing with her nipples with one hand and stroking mom's nicely trimmed pussy with the other. "We love you, mommy, " she said.

"And I love you two kids, " mom said as she slowly started moving up and down. That's when we always noticed her age: she couldn't keep that up very long, so after a few minutes Mom left my dick and lay down on the bed, her legs wide. "Cindy, can you do fun things with me while your brother fucks you? I love that view, knowing what happens."

"Sure mom!" Cindy was no stranger to licking mom's pussy. Nor was I, for that matter, but we always left the decision up to our mother.

Quickly Cindy grabbed under a pillow and brought out a big black dildo. That should be fun! She lay down between mom's legs and started licking her pussy, which was wet from my dick's trip inside her. My sister also raises her lovely butt and spreads her legs a bit, so I have easy access to her waiting pussy.

I push inside her, making her and myself groan for pleasure. It's not entirely clear what she does, but I suspect that she pushes the dildo inside mom at nearly the same time. We've done that before, so I fucked her slowly, and Cindy fucked mom at the same pace.

Mom moaned softly as she was being done by my sister. It was an amazing sound that made me even hornier, and I was sure that Cindy felt the same. Her pussy clamped down on my dick time and again, so I slowly increase the speed of fucking her.

Kind of suddenly mom orgasmed. It surprised us, because usually she had a lot of stamina. Perhaps it was because of the day. Lots of people, lots to do. It would make sense.

As mom went through her climaxes, I slowed down fucking Cindy. We both loved seeing mom get off because of us.

Mom then sat up. "Right, kids. I want to see Cindy on her back and you fucking her the old fashioned way."

"But mom, I want to ride him, " Cindy said.

Mom shook her head and took the big, black dildo. "I have a plan. This will go inside your pussy, missy, and your brother will pump into your ass. I know how much you like that thing of his in your ass."

"Oh yes!" Cindy fell forward, letting my dick flop out of her, and she rolled onto her back, pulling up her legs. Mom licked the dildo and I watched her shove the thing inside my sister. I realized once more how lucky we were, having a cool mom like that. She joined us in bed since we were a lot smaller, like I was ten or twelve years old, and she taught us everything. Dad wasn't the sex lover she was, which was a bummer, and so she had decided to make up for that with us, and we loved every moment of it.

"There we are." Mom patted Cindy's ass. She shoved a few fingers inside her own wet pussy and worked Cindy's asshole with them, lubing her up for me. Mom made sure that she could get two fingers inside my sister's butt hole before looking at me.

"And now you." She winked and lay down next to Cindy, so she could see my dick go in.

"Ready, sis?" I asked as I got into position.

"For you? Always, little brother. Just like the old times." She grabbed her ass and pulled her little hole open wide.

I tapped my dickhead against it a few times, smearing some precum over it, and then slowly pushed. Damn, that was always a tight thrill. Cindy gasped as the thick head popped in. Mom said 'bravo', which made us laugh, and then I slowly moved, going deeper all the time.

"Don't get off inside her, " mom warned me. "I'm hungry for some cum, son."

"You always are, " I laughed, then concentrated of ass-fucking my sister some more. We'd been playing a lot already, so I didn't need much time. Cindy moaned loudly, because each time I went deep inside her, I also pushed the dildo deeper into her pussy. She'd once told me how fucking hot that was for her, feeling both the dildo and my dick inside her. "Here I come..."

I pulled out of Cindy and shoved my dick in mom's waiting mouth. I didn't need to do anything. She grabbed me and sucked hard, and after three good sucks I unleashed all my hot jizz.

Mom kept sucking while swallowing everything. When I was done spraying, she let me go, pulled the dildo out of Cindy and pointed. I knew my dick would be hard enough, so I plunged into my sister and fucked her hard while mom rubbed Cindy's pussy like crazy.

"Ohmygod..." Cindy didn't need much to get off herself, and her pussy got as tight as when she was fifteen while she came. She was a master squeezer, and I loved being inside her while she climaxed.

When she was done, my dick had gone limp. I lay down between mom and Cindy, and hugged both of them.

After a while, mom said she had to go to her bed, because she did love dad very much. "I'll see you again in the morning, kids, " she said as she picked up the flimsy gown. "And tomorrow evening we're doing to do this some more."

"Night, mom, " we both said.

She left.

Cindy and I looked at each other and kissed like true lovers.

"You sleepy yet?" she asked.

"After this? No. You?"

She reached for my dick, which slowly came back to life. "No. Care for some doggy and then some cowgirl?"

I grinned and reached out, pinching one of her nipples. "Let's do it."

Cindy got on all fours. "You're not just a motherfucker. You're also a sisterfucker. And we're glad you are, little brother."