Chapter 1: Pre-Party

Caution: This Erotica Sex Story contains strong sexual content, including Ma/Fa, Ma/ft, Consensual, Heterosexual, Celebrity, Humor, Superhero, Slut Wife, Wife Watching, Incest, Mother, Son, Brother, Sister, Father, Daughter, Group Sex, Safe Sex, Anal Sex, Cream Pie, Voyeurism, Double Penetration, .

Desc: Erotica Sex Story: Chapter 1: Pre-Party - Our family hosted a Halloween Party every five years. My sister and I enjoyed being part of it. Some Very Important People usually showed up in extravagant outfits. There was drinking. there was flirting. there was a lot more! (Some codes are for later chapters)

There is a yearly Halloween Party that rotates from partner to partner at my dad's insurance company. There are five partners in all, and the last time we had it, my sister Katarina was 12 and I was 13! My name is Caleb.

It's back at our place again!

We'd been looking for just the right costume since 2007 knowing that this day would come.

At 17 years old, Katarina, or Katy as she lets me call her, has become magnificently curvaceous—both up front and behind her. At 18, I've finally gotten taller than her, filling out myself—I don't quite have a six-pack, but maybe a four-pack instead!

She went from being 'Hermione Granger' when she was 15—and now she could be a sexy witch, or Wonder Woman.

Back in 2007 I was shorter and gangly, so I went as 'Michael Myers' from 'Halloween'—hey ... it was 2007!

I was seriously thinking of going as Superman—I already had the costume, it was made for someone a bit smaller, but that would make it really tight on me. I put it on to see how it would fit—it stretched just fine except in the groin area. It showed 'everything' so I asked Katy to sew in a codpiece. After she was done, she insisted I put it back on to make sure it was in the correct position.

"Whoa—little brother—I didn't realize how 'grown up' you've become—but the suit looks good, doesn't it?"

"Yeah it does, Sis—I have a Supergirl outfit, if you'd like—we're brother and sister ... they were first cousins?"

"Let me see it first, OK Caleb?"

"Sure," I got up and showed it to her.

"Where'd did you get these anyway?" she asked.

"A couple of years ago—I was in the store and they were on sale. I didn't realize they weren't really the right size. If mine looks this good, I can't wait to see yours on you, try it on?"

"OK, be right back?" she said flashing me that smile of hers.

She walked back in, looking great, but she'd kept her bra on and it looked like she kept her panties on as well.

"Katie, it looks awesome, but your bra is really obvious—try it without it on?"

"Yeah, you'd like that, wouldn't you? I see you looking at me, looking down my shirts, perving on me when I have on a bikini..."

"Well, I can't help it—you're really pretty, and guys like to look at pretty girls ... even if they are his sister."

"OK, I understand a little—but I'm not wearing this without a bra on—despite what you say. If you were the only guy there, I might have a little fun with it, but Daddy's partners will be there and his daughter showing her nipples to everyone would be the hit of the party," she said sarcastically.

"Don't you mean the 'tit' of the party?" I said laughing at my own joke. She just rolled her eyes at me.

"If I can figure something secure to go under the outfit, I'll wear it that way, OK—Hey, I can try a running bra?" she said jogging back into her room.

To no one I said, "Works for me!"

A couple of minutes later, she came back out and it was a solution, no nipples were showing.

"How do I look?" she asked turning in a circle showing her idea and her nice ass.

"Great—don't hit me, but if you got turned on, would it still be enough to hide those ... tasty looking, spine tingling, mouth watering chesticles that you have—oops, I don't think so—there they go again, 'Tweedle-dee and Tweedle-dee, ' up close and personal."

"I can't believe you just did that Caleb—are boobs all men can see and think of?"

"Is ... that a trick question?" I asked sincerely.

"Yes, as a matter of fact—why do my breasts mean so much to you?"

Another trick question—I'm sure of it?

"Are you really asking me because I think I can actually answer that, Katy—only let's change back into regular stuff first, OK?"

"Sure," she said walking out of my room. I pulled off my suit and underneath the codpiece I had a really big erection. I changed into some shorts and a t-shirt, she rapped on my door and came in, in a halter-top and tight jeans.

She saw my eyes go straight to her chest. "Really—I walk in and you actually can't not look at my breasts Caleb, they're just breasts—nothing more!" she said sitting down.

"I'm sorry Katy—I'm not real sure why I do, I think I look the same way at all women ... wait that sounds shallow. Mom ... Mom's breasts are half the size of yours, but I notice her face first."

"Is that because they're smaller than mine, or despite that they're smaller than mine?"

"Excellent question, Sis—thinking about it, it may be Freudian, you know 'the breast gave us sustenance as an infant, so us men always go back to the teat!'"

"That sounds possible, but what would happen if I did this?" she said taking off her halter and showing me her breasts. "Yeah, just like I thought—you can talk about them all you want, but show a guy your tits—they always go 'stupid.'"

Finding my voice, "Katy ... Katarina—Jesus lord—those are the prettiest, roundest, softest looking, lip-smacking titties I've ever seen in my entire life. Are they real?"

She picked up my pillow and started to hit me with it while saying, "How dare you ask me that? Come over here—get really close, look at 'em—do you see any stitch marks?"

I did as she asked, and got very close; she even put her hand on them and raised them up for me to see underneath.

"Katy, can I..."

"What? You want to touch them, hold them, maybe even suck on them a little?" she said sounding like she might just be turning herself on.

"If 'All of the Above' were possible, I would!" I answered now looking into her face and her eyes.

"Mom's out shopping—Dad's at work, I will let you play with them for thirty minutes, but no... 'other touching, ' got that?"

She backed up on my bed as I crawled up and first looked at her and said, "You know how long I've wanted to touch them?"

"No—Tell me?" she whispered.

I carefully and lightly moved my left hand to her right breast, touching the side of it—she recoiled a bit, but her smile came back, "Caleb to tell the truth, I've been wondering what it would be like if you touched them. I see how you look at me, at them," her voiced changed to a whisper, "go ahead, and touch me some more!"

My left hand went under her breast, wrapping my fingers around the underside, feeling the wonderfully soft skin—my right hand did the mirror opposite. I heard Katy moan a little.

"Are you OK?" I asked.

"Yeah, I usually have guys mauling at them, groping at them—it's nice to feel someone who cares so much to be so tender to them and to me, will you suck on my nipples please?" Her breathing changed.

I leaned up and just barely touched the tip of her nipple with the tip of my tongue. She buckled under me a little ... it might have been an orgasm. I moved my entire mouth on her now heaving bosom, while I touched the other one very softly.

"Caleb, why don't you have a girlfriend? You have marvelous skills at this," she said taking in a big breath.

"They all wanted to fuck, but I wanted to fall in love before I make love," I said between licks.

"Is that your way of saying that you love me Caleb?"

I stopped in place, got up on my knees and thought deeply for a moment. Katy wondered what had happened and was putting her hands up gesturing for me to get back to what I was doing.

It became clear to me in that instant—She must have seen the look of epiphany on my face and pulled me to her and we kissed. Boy, did we kiss—both of us were open-mouthed and feverishly exchanging tongues in a fury as we heard the front door open.

Mom! It must be Mom, home already?

"Hey kids, I'm home and need help getting all of the goodies brought in for the party—it's only two days away!"

Katy put her halter back on, while I was trying to push my erection down.

Katy yelled back, "Be right there, Mom" as we both splashed water in our faces. Katy looked in the mirror, fixing her hair, while I combed mine. "You do look like Clark Kent a little, don't you?" she said, patting me on the butt and walking to the kitchen. I counted to a quick twenty then walked in, giving Mom a kiss as she pushed me out of the kitchen to the garage. It took us both four trips to bring everything in—there was liquor, dip mix, streamers and all kinds of party crap.

"Have you two got an outfit for the party yet?" Mom asked as we all emptied the paper sacks onto the counter.

"Yeah," Katy said, "Caleb and I are going as Superman and Supergirl—Super Cousins!"

"Oh, where did you get the outfits from? I tried and had to special order my and your father's outfits. I'm going as Princess Leia, wearing the tiny bikini top—I'm not as stacked as my daughter, but I'll get some looks."

"If I wore it, I'd get propositioned?" Katy blurted.

"If you wore it, I'd proposition you," I said, with Mom slapping at me saying, "Behave yourselves."

"Mom, you've been saying that to both of us since as long ago as I can remember, has it ever helped?" I questioned.

"It did when you two were smaller, but not lately—what were you two doing when I got home?" Mom asked.

"You want the truth, or a well-crafted lie?" I snarkliy replied.

"Let's hear the lie first, Caleb," Mom said looking over at Katy.

"Well, I was on top of my sister, sucking on her big tits, for about 20 minutes just before you opened the door!" I said, with Katy looking at me wondering what I was up to, but still managed to blush, as did Mom.

"Caleb, what a stupid thing to say—what's the truth, Katy?"

"Well, I don't really know what Caleb was doing, I was on the phone with Kara, a girl I met recently, pretty and stacked, just like Caleb likes them," she said giving me a cute smile.

"Well, it looks like we're done here—Caleb, fold up all of the bags to use for candy later," mom requested.

"Sure thing Princess Leia—May the Force be with You! Oh ... what is Dad dressing up as this year?"

She pulled a Starfleet Uniform and a package of pointy ears out of her bag, causing us all to laugh out loud.

I put the bags up in the garage.

Chapter 2 »