So Elaine and I were apparently going to continue enjoying each other for a while longer. I was living a fantasy: fucking my seventeen-year-old sister and enjoying guilt-free sex, for the most part. The issue was keeping it a secret from our mother.

The first time we had sex after returning from our escapades in London, where I was also able to drop my seed in my father's new British wife, Elaine, scared the shit out of me.

"I can't believe you said to Mom that we had sex when she asked how our day was, as if that were a normal afternoon. Jesus! I almost swallowed my tongue when I heard you say that."

Elaine giggled.

"I knew she would assume I was joking. Your reaction was priceless. I bet Mom had an image of the two of us doing it when she was alone. At least if she does discover the truth, she can't accuse me of hiding anything. Did you notice how she kind of perked up after that? She's not that old. I bet she gets horny. And she does have a nice figure for her age. Big boobs and a nice ass, if not a little fleshy."

"You're incorrigible, Elaine. That's our mother you are talking about."

"Where do you think we got those horny genes from, Stupid. I bet Mom was a hot babe when she and Dad were fucking. She and I were watching TV not too long ago and got talking about sex. She revealed to me that Dad had a big one, and sometimes it was uncomfortable. I told her that from what I could tell, you inherited more than curly hair from Dad. I said I accidentally walked in on you in the shower, and you were beating off. She giggled when I showed her how big your cock was with my hands. 'Oh, no, Elaine. That can't be. You're exaggerating. But we shouldn't be talking about your brother's penis, anyway.'

I could tell she was interested, though. She tried to hide it, but women her age have needs, too. I told her I wasn't a virgin, but I never said anything about feeling your cock first-hand. I told her my boyfriend had a little one, and we were very careful. We talked about safety and all that, but she knows people our age are sexually active. She's had a hysterectomy, so she is free from future pregnancies. And even though she is basically as celibate as a nun, she said she loved sex when she could get it."

Elaine frowned, and then an idea struck her.

"Maybe we should try to hook Mom up with a date. She seems to like that old guy who lives across the street. Mr. Murano. I think he's a widower."

"Nah, he's too old. But that's not a bad idea. We should think about this some more. Maybe drop some hints and see what transpires. Mom needs to have a little fun, too. I can't believe you described my cock to her. Jesus, this is starting to sound a little weird."

As is often the case, our ideas lay stagnant for some time, but I had the strange feeling that Mom was looking at me differently. Elaine and I continued our incestuous relationship from time to time, but not with any regularity, mainly due to fears that Mom would discover our secret.

And then this happened.

I was in the shower after a sweaty Saturday of touch football with some friends. As usual, I had lathered up my cock and balls and used the soap as lube while I stroked myself to full arousal and was well on the way to a huge ejaculation. Elaine and I hadn't had sex in over a week, and my balls were loaded. I had a pair of Bluetooth earbuds on and was rocking out to an old song as I felt my orgasm explode from my brain to my balls and out the end of my dick. As the first shot hit the shower wall, I looked up and there stood my mother. I had not heard the bathroom door open, but there she stood, mouth agape, and a look of shock on her face as I turned to face her. I let go of my cock, but it remained at attention and continued firing a last squirt at the shower door before I tried to cover a fully erect penis with my hands. At the sight of my mother, it wilted quickly.

"Oh, my god, Ron. Sorry. I didn't realize you were in here. I came in to grab some lotion. I didn't see anything." She quickly turned and left, but not before turning beet red.

Having one bathroom in the house caused these occasional mistakes, but she had to have heard the shower running. I rinsed off, returned to my room, and dressed.

"What the hell was that? Did she do that on purpose?"

I let it drop and said nothing, but I wondered.

Later that evening, we all stayed up late watching an old classic movie, and around midnight, we went separately to bed. Elaine gave me a surreptitious wink as she entered her bedroom

"I'll tell you about it in the morning, Ron. Sweet dreams."

Puzzled, I nodded and headed for my own room, but decided to get a glass of water. Mom's bedroom door was partially open, and I quietly stopped and glanced in. She was out of sight, but I could see her image in her closet mirror. She was posing in front of the mirror and had both hands under her bra-covered breasts, lifting them for additional support or weighing them. Then, she reached behind and unfastened her bra clasps and removed it. Her breasts settled as she set it aside, and I grabbed my cock in response. Her tits were much larger than I expected. They hung heavily on her, well down her chest. Her large pink areolae were similar to Julie's, Dad's new wife in London.

Mesmerized, I watched as she posed in the mirror, smiling and tweaking her nipples. Then she suddenly stopped and looked shocked. I thought maybe she found a lump or something, but I prayed she hadn't guessed I was spying on her. Regardless, a second later, she lifted a breast to her lips and licked the nipple. I thought I was going to cum right there.

I knew I had to sneak back to my room, but I stayed for a moment longer as she raised the other breast and sucked on the nipple. It was almost as if she were putting on a show for me. But I was tempting fate. I tiptoed back to my room and beat off to images of my mother. Technically, she was my stepmother, or so I reasoned. Like Elaine, we weren't blood related, not that it made my fantasies any less weird.

The next morning, Elaine told me that Mom had seen my cock accidentally.

"You weren't lying, Elaine. That thing looks like it belongs to a horse!"

So for some time after that, I kept my thoughts to myself and tried to occupy my days with chores before going off to college for the winter. Elaine and I saw less and less of one another, at least intimately. Mom, on the other hand, seemed to take a renewed interest in me. We did convince her to think about dating or at least to get out more, but she was uninterested.

"I appreciate your concerns, but most men want only one thing from a woman my age who is blessed with big boobs. You can guess what that is. I'll dote on you two instead. Ron will be leaving soon, and so I'm going to spoil him while I can. It's nice to have a man around the house."

A couple of weeks before I left for school, Elaine spent the night with a friend, and Mom and I were home alone. We had a nice dinner and shared a bottle of wine. Mom complained about a sore back from raking leaves, and I offered to give her a massage.

"Tell you what–I'll take a hot bath and then when I'm done, you can massage me if you are still awake."

I watched TV while she readied her bath. As predicted, I fell asleep and woke up to hear my name called from the bathroom. I stood outside the door and announced I was still up.

"What can I get you, Mom?"

"Honey, this is so wonderful. I haven't had a hot bath in ages. I drank all my wine. Would you be a sweetheart and pour me another one? Come on in and get my glass. I'm covered in bubble bath."

I opened the door and was greeted with a foggy mist. Mom was slunk down in the tub, but her breasts were floating to the surface, and I could just make out her nipples among the bubbles.

"Don't peek at your old mother, not that you would want to. Here's my glass."

She reached up and gave me a side view of her breast.

"Oops. Sorry about that. Thanks, Honey. I'd ask you to join me, but people might talk. The wine is on the counter. Give me a good pour. I'm in the mood to get a little drunk as pain relief."

I returned moments later and handed her the wine. Once again, she carelessly exposed a boob. She probably didn't need another glass of wine. I returned to the telly and listlessly watched the late-night talk shows.

After a bit, I heard the bathroom door open, and Mom temporarily came into the living room wearing only a towel.

"I'm calling it a night, Honey. Turn the TV off when you are done. My back is still killing me, so I'm going to bed. G'night."

"Night, Mom. Sweet dreams."

I waited a few minutes and then turned off the television and the lights. I decided to check on her before going to my room. Her door was wide open, and the nightstand light was on. Her towel was on the floor, and she was lying on her back with a sheet covering her lower half, but her breasts were bare and hanging somewhat to the side of her chest.

I entered her room to turn out her lamp, but when I arrived next to the bed, she looked up at me and smiled.

"Oh, Honey. You decided to give me a massage after all. You're so sweet. Come here and kiss your momma."

She reached up and pulled me to her, and the next thing I knew, our lips were meshed together.

"Hmmm, no one has kissed me in ages. I'm so lucky to have a son like you. Even though I didn't give birth to you, I've raised you to be a true gentleman. And look at you now. You are a real man. And look at me, my breasts are showing. No matter. You've seen tits before. Even mine, huh? I saw you peeking at me from the hall. It made me feel things I hadn't felt in ages. Do you like your mother's big tits? Your father loved them until he found someone younger, the dirty fucker. Oops, I shouldn't talk like that. You'll think poorly of me. Mothers don't use words like fuck. Which reminds me, I haven't been fucked in ages."

She giggled and pulled me to her lips again.

"Mom, you've had too much wine. You need to go to sleep."

"I know I'll regret this tomorrow, but, Honey, will you massage your mother. I'm a little tipsy, but I know what I want. And right now I want your strong hands on me. I know you want to feel my big breasts. Go ahead. They love the attention. Don't I have some big nipples? They're doozies, aren't they? But then so are my boobs. You should have seen them when I was young. They stood out like twin torpedoes. They got lots of attention until your asshole father left me for another younger version. I hear his current wife is built like me. Some things never change."

As she spoke, she grabbed my hands and placed them on her breasts.

"There, isn't that nice? My back feels better already. Here, let me scoot over, and you can straddle me so you can be more comfortable. Just this once, Honey. Mmmm, that feels so nice. You like your momma's big tits, don't you? I can tell. Go ahead and suck on them if you want. Yes, right there. Ooh, and I think I feel something getting hard. My boy likes Mommy's tits, I can tell by the swelling in your shorts."

My cock was straining to escape the confines of my running shorts, and when I looked down, the crown was peeking out of the waistband. I tried to pull them up with a free hand, but she stopped me.

"Oh, no, Honey. I want to see what you have hiding in there. Let's have a look. If the one-eyed snakehead peeking out of your shorts is any indication, I'm afraid to see the rest of it."

She reached up and pulled down the elastic waistband, and my cock flopped out onto her stomach.

"Holy shit. I knew you were big, but this thing is huge. I thought your Dad was big, but he is a medium compared to you. I bet I know what you'd like. Push my breasts together and put this bad boy between them. Your dad loved that. Yes, just like that. A good old-fashioned tit-fuck."

My brain was on fire, but I couldn't stop at this point. I looked down and placed my cock between my mother's huge breasts and watched it disappear as I slid it toward her neck. When the head emerged from her cleavage, she smiled and licked it. We continued in this way for several minutes. After a while, her mouth opened and her tongue beckoned me, so I slid forward until my entire cockhead was stuffed in her mouth.

"Jesus, you are a mouthful," she finally said when her mouth was free. "Take those shorts off so I can see your balls. I love doing this, and now that we've come this far, I'm glad you are not freaking out. I've wanted this for so long, you can't imagine. Ever since your sister told me you had a big penis, I've wanted to do this. I love the feeling of a hard cock in my mouth, and it's been ages."

I stood and slipped off my shorts and underwear. I was now naked from the waist down. Mom reached over and stroked me, and then she guided me directly to her mouth as she rolled onto her side. Her breasts piled on top of one another on the edge of the bed.

"Just go along and humor your mother for a while longer, Ron. I need this. I've been frustrated for so long, and this is like the best birthday present ever, even though it's not my birthday." She giggled and resumed sucking me.

"We haven't committed any crime, Honey. Just a few social norms, but I'm fine with that. At my age, I have to take what I can get, and sucking on the thick cock of my son is pushing the boundaries, isn't it? But you're a horny young man. You don't mind pleasing your mom just this once, do you?"

By now, the sheet that had been covering her lower half was bunched at her feet. She was completely naked, and I could see that her maidenhair was neatly trimmed. I reached down and stroked the area between her legs with my fingers, and her sucking took on a new dimension.

"Oh, yes, Sweetie. You have no idea how good that feels. A real man is touching me there. Since we've come this far, will you do me a favor, hmm? Now that your penis is nice and wet, will you see if it will fit in me there? You'll have to be very careful. I'm not used to this, but reach in that drawer and there is some Vaseline. Yes, right there. Put some of that on your penis and on my pussy.. Ooh! It's cold! Now get between my legs and see if you can make your mother happy. See if you can make your penis disappear inside me. Just be careful to start."

"Are you sure this is what you want, Mom?"

"Oh, yes, Honey. I've never been so sure of anything in my life. I know this is wrong in so many ways, but I'm past that. I need this more than you can imagine."

I slid up onto her queen-sized bed and situated myself between my mother's legs. For someone in her forties, she had nice legs with just a little extra flesh around her hips. She craned her neck to watch. Her face was a picture of sexual excitement.

There was no foreplay other than rubbing my cockhead up and down her slit. Her loose pussy lips that had stretched out to give birth to Elaine resisted the intrusion of my cock, but gradually I was able to get the head inserted and a little more.

"Oh, sweet Jesus! There you are. Inside your mother, Honey. Is my pussy tight enough for you? God, you are so big. Mmm, gently now. Nice long, slow strokes. There, like that. You feel so good, and it's been so long. I've forgotten now wonderful this is. Kiss me sweetie. It's okay. You're fucking your mother. A little kissing can't hurt."

I placed my lips on hers, and instantly I felt a tongue enter my mouth. My eyes were closed, but there was no doubt about it: I was fucking my mother. And she knew how to kiss. Her tongue slithered in my mouth as if frantically searching for a lost treasure. She began to meet my thrusts with her own, and suddenly we were like two wildcats connected at the waist. She began screaming and moaning as I increased my tempo and soon was pounding all eight inches of thick cock in and out of her. She whispered hoarse...