Author's Note: I have originally written this for myself, however I decided to share it. For now this is the full story, however I may write some kind of continuation of it in the future. Enjoy!



I'm a single mother. My husband left me and my son Jim 4 years ago. Since then I cared for Jim alone. He is 18 years old now, just finished school and is currently unemployed.

I'm happy with my life right now. The only thing that's missing for me is the touch of a man. I love my body with my huge breasts. For a woman of 40 years it's incredibly well in shape. Still finding the right man is difficult even for me. Since the divorce I am even more careful with my choices, which have led to absolutely zero dates and zero sex over the last four years.

In my predicament I often resort to self-bondage in my spare time when Jim isn't home.

Today was one of those days. I sat on my bed, ankles tied to my shapely thighs. Leather straps were wrapped around the base of my enormous tits, making them round and full.

I had my nipples pierced with heavy steel rings some time ago, which were now connected with a chain. A large ball gag was wedged between my teeth, stretching my lips and causing saliva to dribble onto my breasts.

A big butt plug and a thick penis-shaped vibrator were stuck in my pussy and ass respectively, teasing me endlessly but never letting me cum. Finally I wrapped a belt around me, just below my breasts and cuffed my hands to it behind my back. I had to arch my back, which caused my tits to stick out even more.

A key was dangling behind me from a hook in the ceiling. It was secured with a timed lock and would fall onto the bed after 2 hours, so I could lean back and release my cuffs with it.

Everything was well until I heard the door open and close. Jim couldn't be back already. Thoughts were racing through my head and I tried to come up with a well needed explanation.

When he saw me sitting on the bed all tied up I tried to speak but forgot my gagged mouth. I looked at him, but he only stood before me without doing anything. Suddenly he started to squeeze and massage my breasts. I let out a surprised yelp and looked at him with wide eyes.

"I'm sorry mom", he said, "but I always wanted to touch them so bad." Before he continued he put a blindfold over my eyes. It felt so good when he fondled my breasts like this. I knew it was wrong but I couldn't deny that I longed for something like that.

He stopped and I could hear him opening his trousers. My heart started beating faster and I struggled against my restraints. He wouldn't dare...

But he did and suddenly I felt his large penis between my breasts. "Oh god", I thought as he started to rub his cock with them, "this feels so incredible."

It was wrong but I couldn't care less that he was my son. I pushed my tits in his direction and also started to move my chest up and down. I could feel him cum, drenching my tits with his semen.

Breathing heavily, my head was spinning. "My son is using me, his mother, to pleasure himself." ,was my only thought.

"You are a real slut aren't you" he said. I was surprised that he was speaking like that even though I raised him properly. But I couldn't deny it. It felt good, to feel a penis again, and being covered in cum.

"Well I still have something for you", he said and removed the gag. Before I could say anything he shoved his cock in my mouth. It was thick and juicy and reached almost all the way into my throat. I sucked eagerly on it while he pushed it in and out, over and over again.

With a powerful orgasm he exploded in my mouth, filling it with cum. After he pulled his penis out, he gagged me again.

It must have been an incredibly sexy sight, seeing my tits covered with semen and more of it dripping from my lips, mixed with drool.

During all of this the vibrator in my pussy was driving me crazy. I moved my hips as best as I could and tried to relieve myself but to no avail.

Jim noticed this of course and turned it off. A frustrated moan escaped my gagged mouth.

"We don't want to get ahead of ourselves", he said and slapped my ass, "the best is still to come."

A slight feeling of dread came over me now. Sucking him off and letting him fondle my breasts was fine but actual sex was maybe going a bit too far. He started to rub my clitoris with one of his hands, while the other one was playing with one of the rings that pierced my nipples. He was very skilled and I even started to move my hips according to his fingers.

Then he pushed me onto the bed. My tits were squashed between the sheets and my body, my ass was stuck into the air. He stroked my ass-cheeks and then plunged his massive cock into my pussy.

In that moment I forgot every concern that I had. His cock filled the insides of my vagina completely. I let out a lustful moan as he started to fuck me. I also moved my body and was panting heavily because of his powerful thrusts.

He turned me around so that he could massage my gigantic breasts while still burying his penis into my pussy.

The orgasm took us both at the same time. He shot a large load of warm semen into me and I was rocked by a massive orgasm, making me scream into my gag. I arched my back, pushing my chest out and into his hands. I could feel my eyes rolling up into my head.

He pulled out his penis and removed my gag. Before he did anything else I could hear him start to cry. He apologized and sobbed uncontrollably and since he I couldn't really embrace him because my hands were still tied I only pressed my body against him and planted a kiss onto his mouth. This stopped his little emotional outburst.

"It's okay sweetie", I said, "Mommy is not angry. In fact I couldn't be happier, you filled me up so well and I longed for something like this. You are right I really am a slut and I loved it when you fondled my tits."

"Are you sure", he asked timidly, "I just had sex with you and you were so helpless and I just couldn't control myself. I was horny and you looked so hot, but you are my mom and..."

I stopped his rambling with another kiss.

"Look sweetie what we did was definitely wrong, but I do not care. I want you to use me however you please. You can fuck your mother whenever you want. My body belongs to you now and I will not be angry with you ok?" I reassured him.

"Well", he said, "if it's really okay with you."

"It is", I smiled. He put the gag back into my mouth and pushed me onto the bed again. Obediently I spread my legs, inviting his cock into my vagina and moaning seductively. I cried out with pleasure when I could feel him plunging deep into me.

Three weeks later our sessions had become pretty much standard. I was almost nonstop in some kind of bondage as my sons little fucktoy. Today was especially great.

My son covered my body completely in latex. My massive breasts were two ample mountains of latex and a large rubber dildo was stuck in my pussy.

The only thing not covered was my asshole. My arms were locked behind my back with a strict leather armbinder which pushed my tits out even more. I wore high heeled boots and my ankles were kept apart by a spreader bar.

My head was encased with a heavy discipline hood, which encased everything except my nose and mouth which was filled with a large penis gag.

Jim pulled up my arms and attached a chain to the armbinder which was hanging from the ceiling. This caused me to bend over exposing my ass to him.

I could feel his large cock entering my ass and let out a gasp and moans of pleasure. With powerful thrusts he rocked my body back and forth.

My tits were swinging like pendulums. I could feel his penis starting to twitch and pulsate and it did not take long, before he shot a big amount of cum into my ass.

I almost blacked out from the intense orgasm that flooded my body.

I was never so happy in my life knowing that I would be used as a sex toy by my own son every day. And he definitely enjoyed it fucking his helpless and sexy mother.

I really am a big slut.