Mom screamed. I don't mean she yelled, or cried out. I mean she screamed. Loudly. I thought I had hurt her and pulled out causing her to scream again. I heard pounding on the stairs and an argument outside her door followed by Aunt Carol's voice.
"Amy? Bobby?"
"GO AWAY!" Mom shouted at them.
They left, still arguing and Mom finally started to relax a bit. I kneaded her hips and rubbed her back.
"Untie me."
I freed her and expected a tongue lashing lecture. Instead, Mom stayed in the same position. Then she pulled a couple of pillows to her and clutched them.
"Okay baby, let's try it again. SLOWLY! And with more lube."
I was thrilled and got into position again, applying fresh lube.
"Go ahead."
"Yes, Mom."
I pushed and slid in. Mom cried out again, this time into her pillow. I pressed forward gently and slid deep into Mom's ass. She was groaning and breathing heavily but not crying out. Slowly I started fucking her. Mom's ass was incredibly tight but it felt wonderful. After ten or fifteen minutes she was stretched enough to accept me comfortably and I was thrusting at a more normal pace. Mom was actually moaning in pleasure and I turned the intensity and rate of the toy up somewhat. I also grabbed the squeeze bulb and added more suction to her nipple trainers. Mom responded quickly, mewling constantly into her pillow. After a while I tried to reach around her hip and touch her pussy, it was dripping wet! And not just the thin milky normal pussy juice but thick, gooey cum. Mom's legs were starting to tremble. I turned the toy up higher and started fucking her faster. Mom came within minutes. Her whole body shook and trembled like she was being electrocuted. Her ass clamped down on my cock, and she was shouting into her pillows. I felt wetness on the front of my legs and our bodies were coated in sweat. I was close and pounded her ass a few more hard strokes which caused her to scream louder, then I came. I emptied my load and saw stars. Blinking them away, I slowly pulled out. Mom's ass stayed gaping for a bit, then slowly shrank. I turned off the toy and removed it and the nipple trainers.
Picking up some tissues I removed the full condom. Then stumbled into the bathroom. I turned the shower on then went back and half carried Mom in. I held her close and covered her with kisses as she cried. Finally she choked back her sobs and spoke.
"Oh Bobby, baby. T-That was incredible... I don't think it's ever going to be my favorite, but giving it to you was important. I really wanted you to have it. I didn't expect to climax, but damn I did, and it was a good one too. I felt it all over... my whole body, from my scalp to my toes... Thank you, baby, thank you."
When she could stand freely, I bathed her and then she washed me.
"What a lucky woman I am." she said, "To have such a gifted, understanding, and loving son."
She turned the water off and we toweled each other down.
Back in her bedroom she eyed the mess on her bed. "Wow. Well, let's strip it quickly and get it into the machine."
We did and I helped her clean and put away her toys. I looked in her closet and handed her a babydoll nightie in a shade of baby blue that matched her eyes. The cups were see through lace and it had a plunging back with spaghetti straps. I tossed the matching panties aside. Mom laughed. As we started downstairs with the bundle of dirty bedding we paused on the landing.
On the sofa below us Aunt Carol was sixty-nine beneath Kate. We watched for several minutes as they pleasured each other. Then with an unspoken understanding look, we went down to join them.
Epilogue
Six years have passed since that weekend. I eventually graduated and landed a very good job doing IT for a top company in the telecommunications industry. I'm not a boss, just a grunt, but it pays very well. Kate competed in gymnastics through college but broke her ankle at the start of her senior year. She's running her own fitness center and coaching the High School girl's team now. Dad and Uncle Jack are still up in the cabin, fishing and hunting. Mom and Aunt Carol Stopped their "side business" last year when surprisingly enough the legitimate business started making a good profit. And yeah, we still fuck.
Every damn day. Surprised?