[Author's note: This is based on a "mostly" true story related to me by a reader. I created names for the characters and took license with some of the plot and much of the dialogue. But the main outline of what happened is based on an actual account.]
As a boy, did you ever wait for the clothing catalogues to come in the mail so you could turn to the underwear section and feast on the beautiful women featured there, wearing only bras and panties?
Well, I lived with two such models, my mom Amber and my sister Ava. I didn't have to wait for catalogues to see my mom and sister in their underwear, they were glad to show off for me.
The sexual part of our relationship didn't start until after I turned 18. My sister was a year older than me and my mom 38. Both are sexy as hell - that's why they got chosen to model women's underthings.
During the summer of my 18
th
birthday, Ava had not yet started her modeling career. But Mom's agent was already scouting her. Both Mom and Ava have auburn hair, half-way down their backs. Both are tall with skinny waists and big boobs, at least my moms are big. Ava's are a bit smaller, but very attractive all the same time.
Mom would often bring home sexy underwear she was going to model and try it on for Ava. I used to peek in the door and eventually they invited me in for the show. It was hard to disguise my growing erection, and I think they liked the fact that they were turning me on. There was no dad in the picture, so I was the only "man" in the house.
I swear the way they did the "model" walk was designed to excite me, and it worked! They'd strut around wearing the thinnest, smallest things, sticking their butts out and even pulling down the fronts of their panties to just above their bush. They would turn away from each other and bump their hips together, then turn to face each other, pressing their boobs together and pretending like they were going to kiss.
There were so many nights when I'd have to excuse myself to go jack off in the bathroom. I'd hear them giggling as I rushed out, like there was some kind of contest to see who could get me closer to cumming!
For the most part, I figured they were just teasing and having a good time at my expense. In reality, it was the lead-up to an incredible sexual relationship with the two women in my life.
Mom was away a lot for photo shoots, so Ava and I spent plenty of time alone together.
One day, Ava wore a particularly revealing swimsuit. We have this great pool, and I was already swimming laps when she came out dressed in, well, not much. The suit was a white two-piece. The top was so thin that I could see the outline of her areola through the fabric. The bottoms consisted of a small triangle over her pussy mound and tied to a string in the back. As she turned her back to me to climb into the pool, I could see her ass cheeks as if she wasn't wearing anything at all.
The only thing that kept my dick from getting super hard was the cool water. She swam around me, splashing me and teasing me. I started splashing her back and noticed that the same cool water was making her nipples erect, poking out of the suit fabric straight at me.
After horsing around for a while, we got out and laid on a couple of our chaise lounge chairs. I tried not to stare at her body and wondered if every sister was as flirty as mine. Probably not.
We were laying opposite each other, so I had the most perfect view up her legs. I so wanted her to open those legs wide enough so I could sneak a peek at her pussy. As her body warmed up, her nipples calmed down and disappeared into the fabric of her suit top. I was very disappointed.
The sight of her sexy body got my dick hard and I watched it push out sideways in my suit as it hardened and thickened.
"Do you always get like that?" Ava asked.
I looked up to see Ava eyeing my crotch.
"Like what?" I said, somewhat embarrassed.
"Like you have a boner all the time."
"Shit, Ava!" I said, covering myself with a towel.
"Sorry," Ava said. "Didn't mean to embarrass you!"
"Oh, I think you did!" I said, standing and going inside.
I went straight to my room and masturbated, thinking about my sister without her suit on.
The next day was hot so we both changed into suits and went out to the pool. Ava wore a one-piece white suit this time. I thought maybe she was thinking better of teasing my cock until she got in the water.
As she got wet, the suit turned nearly transparent. As it clung to her body, the suit pressed into her breasts. I could see her areola and nipples as clear as day. My dick got instantly hard.
"There it goes again," she said, coming up to the stairs where I sat and putting her boobs over the edge.
"How can you get away with wearing a suit like that?" I asked, incredulous.
"I'm at home," Ava answered, "and I can wear whatever I like. I can see you like it too!" she said, glancing down at my crotch.
"Are you trying to torture me?" I said loudly. "Because it's working!"
"Not torture," Ava said, looking up at me. "But maybe tease? I like making you hard."
"But you're my sister!" I said.
"So?" Ava replied. "I'm a girl, aren't I? Can't I have some fun making another guy have an erection?"
"I guess," I said. "Wear that suit around and any guy is going to get hard!"
"So, you like it!" Ava said.
"I sure do!" I said.
"What do you like the most about my suit?" she said, standing and turning around like she was modeling it for me.
"What's in it!" I blurted out.
Ava blushed at my comment. It was the first time I'd seen her embarrassed in a long time.
"And... what part of me do you like the most?"
I thought for a second. "Your tits!" I said. "Though I like the other parts too."
She stuck her chest out a little, pressing her nipples against the fabric and making them even more obvious.
"But my tits are so small compared to Mom's," she said, looking down at her chest.
By this time my cock was throbbing in my suit. Every time I clinched it, my dick would tent up and grow longer and thicker.
"But your tits are so big and pointy!" I said. "They're every bit as beautiful as Mom's."
"You really think so?" Ava said.
Then she did something I didn't expect. Ava took the straps of her suit off her shoulders and lowered her suit to expose her tits. I had the first look her incredible, thick, pointy, swollen nipples.
"Oh fuck!" I said.
"Will you put some suntan lotion on me?" Ava said as if nothing had happened.
She grabbed a bottle and laid down on a chaise lounge, her tits still completely exposed.
Standing next to her I was conscious that my cock was throbbing and uncomfortable under my swimsuit. I took the lotion and started applying it to Ava's shoulders.
"Not there", she said. "On my nipples".
I was blown away. "You know this is going well beyond just teasing and having fun, right?" I said.
"I know," Ava replied. "But I want you to do it. Don't you want to touch my nipples?"
"Of course I do," I said. "I just want to make sure you know what you're doing. You're asking your own brother to touch you!"
"I know," Ava said. "And I want it!"
I got some lotion on my hand and started rubbing her nipples. They felt so hard, and her areola were puffy, making little mountains that stood out from her breasts. I could not believe this was happening. It was a dream come true and my cock felt like it was going to explode.
"Mm," Ava moaned softly. "Feels nice."
I squeezed her tits, twisting them, pulling on them as she kept moaning. I noticed her lift her chest up as I pulled on her nipples, taking in a quick breath and sighing. She closed her eyes as I continued to apply lotion and work it in.
After about a minute, Ava looked up and stared at my growing erection.
Then she said, "I like looking at your cock. It looks so big and hard. Can I see it?"
"I really want to show you," I said. "But should we be doing this? Isn't this, like, incest?"
"Oh, don't be a prude," Ava said. "All I said was I like your cock and wanted to see it, that's all."
"Okay," I said. "Here goes."
I pulled off my trunks and stood there - both of us looking at how big and thick and hard I was. In fact, I don't know if I'd ever seen my dick that big. A little pre-cum seeped out of the tip as my cock stood straight out from my body, moving up and down slightly with each beat of my heart. I clinched it and it moved up and down quite a bit.
"Fuck!" Ava said.
As she watched me, she slid her hand between her legs and stroked herself. She moved the fabric of the suit to the side and reached her fingers under it. It was so sheer that I could clearly see how wet she was as her fingers rubbed her slit. As she stared at my cock, she inserted a couple of fingers into her pussy and started fucking herself, lifting her hips up and down on the lounge chair.
Ava could see I was in agony. "It's okay if you touch yourself too," she said.
That's all the encouragement I needed. I stroked myself in front of her.
Ava closed her eyes and started fucking herself furiously. She moaned loudly and her hips moved up and down rapidly.
Suddenly, her body arched upwards, and she cried, "Yes! YES! I'm cumming! I'm cumming!!"
"Oh, fuck!" I cried out as I felt a strong sensation that I was going to cum and could do nothing to stop it.
Ava opened her eyes, her body still jerking up and down, just in time to see the first rope of white cum shoot from my dick and land on her lower lip. I continued jacking my cock and coated her face and nipples with a huge load of cum.
I plopped down on the lounge chair next to her, my cock oozing cum and still half hard.
"Wow!" Ava said, using her tongue to catch the cum dripping from her lips. "It tastes good. Almost sweet," she said.
We stared at each other for a few minutes, me still stroking my cock and her fingering herself. I could see a little tuft of red hair by her fingers.
"I like your bush," I said.
"There's not much of it," she said, looking down at herself. "But I like it too."
"What did we just do?" I said, still in a state of shock and feeling wonderful post-cum pleasure all over me.
"It was fun," Ava said. "I came really hard watching you jerk off."
"Me too," I said.
"I guess I'd better clean up," Ava said, removing her hand from her suit and standing.
"Me too," I said.
We didn't say much to each other the rest of the day. Ava went out for a while and I watched TV, but I couldn't get my mind off my sister's boobs and my peek at her pussy. I got super hard thinking about it but for some reason I didn't bring myself to an orgasm. I pulled down my shorts and edged myself, wanting her to be watching me again while I came.
The next day was even hotter.
"Want to go swimming?" Ava asked after breakfast.
"Of course!" I said, hopeful for a repeat of the prior day.
I changed into my suit and by the time I walked out onto our shaded deck, Ava was already in the pool. I joined her and noticed she was wearing the very skimpy suit from two days ago. No see-through fabric this time.
We started to lay out on our lounge chairs when Ava grabbed the bottle of suntan lotion and handed it to me.
"Want to rub it on me again?" she asked.
