Authors Note: All participants in this story are over the age of 18.
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It WAS a good prank. Well it would have been a good prank if it'd gone off the way she planned it. Unfortunately my stepsister and her best friend didn't quite get it carried out the way they planned. Now I don't hate Tammy. She is my stepsister after all. We haven't always gotten along. Just getting used to having a sister after being an only child for sixteen years was tough enough. Having to get used to a sister with a really warped sense of humor made the last three years a mixed bag. Her mom, my new mom, Elaine was alright. My dad seemed to like her and she made him happy, so what could I say? Even before she got married to my dad, she pulled me aside and brokered a deal with me. She'd not make life any more difficult for me than it needed to be if I didn't make life any more difficult for Tammy than it needed to be. It seemed like a reasonable arrangement, one which she has worked hard to keep her side of.
I guess the pranks Tammy seemed to always play on me was her way of dealing with suddenly ending up with a brother after being an only child for her first sixteen years. They weren't usually mean, and like I said, her warped sense of humor left many of them to be less than funny in my book. Of course when I complained to Elaine, mom, she simply told me that if I wanted to return in kind she wouldn't find that to be unreasonable or unfair, as long as the pranks weren't dangerous or illegal. Consequently Tammy found the periodic live critter in places they weren't supposed to be, like her dresser drawer. All of her bras missing or her underwear hidden at inopportune times, that sort of thing.
This prank wasn't meant to be mean either. I suppose it was her way of teasing me over not having a date on Valentine's Day. I was in the shower, taking care of business, if you know what I mean, when they slipped into the bathroom and dumped a container of some kind of pink powder and little red tissue paper hearts over the top of the shower curtain. Like I said, it would have been a good prank had she not lost her balance on the trash can, which she was using to get high enough to reach over the curtain. In her haste to escape she slipped and caught herself on the only thing that appeared to be strong enough to hold herself up, the shower curtain. In seconds, I found myself standing naked in the shower, with my hand wrapped around my hard cock, with both my stepsister and her friend staring at me.
In itself it would have been embarrassing to be seen like that by Tammy, but at that moment I was thinking about her best friend Vickie. And given my state at the time, I'm sure you can guess what it was I was thinking about!
Tammy and I had inadvertently seen each other in various states of dress and undress, which one would expect when you share a bathroom. But to date neither of us had seen the other naked, and it was my misfortune to be on the wrong end of that first time.
The girls didn't stay long, running from the bathroom screaming more in surprise at what happened than in fear of anything, since I was standing covered in pink powder and tissue paper hearts, unable to chase either of them down. I suppose it was good that our parents were gone for the day when I finally got cleaned off and stormed out, pounding on her bedroom door with less than pleasant statements being hurled through her closed and locked door from my side.
Two hours later I could still hear them in her room, giggling and laughing; I presumed at my predicament. My nineteen year old mind was busily working at just how I could get back at her. Little did I know that my chance would come much, much sooner than I could have ever predicted.
"Vickie! NO! Don't!" I could hear Tammy practically yell at her best friend through the bedroom wall.
"It's okay. I'll be back in a while." Vickie laughed. "You're the one that dared me, remember?"
"But not this!" Tammy cried.
"You know. If I were you, I'd not shout so loud. Unless of course you want your brother to hear you."
"VICKIE!"
"Uh uh. That was the dare. We're both the same or it's no go. Fair is fair!"
"But Vickie! If Andy comes in!"
"Well, you'll just have to be really quiet until I get back then, won't you?" she giggled before I heard the door of Tammy's room open and then close. I had to admit I was curious as hell. What were those two up to that they were worried about me seeing? And what was the dare?
I waited a few minutes to make sure that Vickie was gone and then snuck to my sister's room and gently inched the door open. To say I was shocked would be the understatement of the world. There was my stepsister, laying on the bed, completely nude, her legs spread and tied to the footboard with fat white ropes and her hands handcuffed to the headboard over her head. Between her spread legs was an assortment of dildos and vibrators. I was initially afraid she'd see me peeking in until I realized her eyes were covered with a heavy pink eye cover.
Like I said, I'd never seen her naked, only a couple times in her underwear, so I was in no hurry to close the door. Her tits were larger than I'd realized, each creamy mound sitting on her chest firm and round, easily larger than a coconut half. Her areola were slightly oblong with hard pink nipples sticking up toward the ceiling, almost as if anticipating being played with or licked. Even more surprising though was her pussy. Her full round lips were shaved as completely bare as her mound, a fair amount of soft looking inner lip already protruding and glistening wetly in the bedroom light.
I quietly slipped into the room, making damn sure the door didn't make any noise as I pushed it most of the way closed behind me. I really wasn't all that sure what I was going to do, but after the two of them got a really good look at me in a compromising position, I really couldn't help but take advantage of paybacks.
"Who's there?! Vickie? Is that you? You better damn well untie me! VICKIE!" Tammy shouted, apparently able to sense that someone had come in the room, expecting it to be her friend. I grinned and kept my mouth shut as I stepped closer to the bed and my struggling, completely nude sister. Laying among the sex toys on the bed was a large, soft feather. You know...paybacks are hell, and this was going to be one hell of a payback for a LOT of pranks against me. I picked up the feather and then, standing over her, began to draw the feather up and down her creamy thigh. "SHIT! Vickie you scared the fuck out of me! Now untie me!"
I grinned to myself and continued to tease her soft smooth skin with the feather, working it slowly up her squirming body, up her stomach to her exposed tits. I slowly circled each firm orb with the feather, making her gasp as I brushed it across the fronts and her sensitive nipples.
"Oh fuck Vickie. You're so fucking bad! Ohhhhhhh shit, you're good at that," she moaned as I teased around and across her nipples before slowly drawing the feather down her stomach toward her spread legs. She moaned softly as I teased the feather around her lips, the tip of the feather picking up her wetness as I teased across her soft delicate inner lips. I wasn't a virgin by any means, but I had to admit this was probably the best view I'd had of a pussy since I got laid the first time. Maybe what made it so special looking was that it was my stepsister!
I teased the feather up her body again, sweeping it back and forth across her nipples, bringing more moans and gasps from her. I just couldn't resist the temptation... I pulled the feather away from her and moved to kneel on the edge of the bed, leaning over her and gently teasing her nipple with the tip of my tongue.
"Ohhhhhh fuuuuuuck Vickie," she moaned softly as I swirled my tongue around and around her hard nipples, before blowing gently across the now wet areola and nipples to chill them slightly. "Oh god you are getting me so fucking wet," she moaned.
I pulled my head back and stared at her, almost surprised that it hadn't occurred to me before this. Of course it made perfect sense now. She wasn't upset that Vickie was tickling her or licking her nipples because it wasn't the first time she'd done it. Fuck, my sister swung both ways!
I went back to teasing her body with the feather as I considered what I should do. Laying between her legs were half a dozen dildos and vibrators. A slender blue silicone vibrator seemed to attract my attention, maybe because it still shined with lube and pussy juice. I set the feather aside and reached for the vibrator, turning on the device. The gentle hum filled the room and Tammy moaned softly, expecting its vibrating touch. I didn't disappoint her.
I gently pressed the tip of the vibrator against her wet pussy lips, rubbing it up and down slightly, working it between her lips until I could tease the tip against her hard clit. She spread her legs wider and moaned loudly as I slowly stroked the soft device up and down her pussy, teasing just the end into her tunnel before pulling it out and working it back up to her clit. Over and over I stroked her, slipping more and more into her with each pass until I was pressing almost the entire length of the blue toy into her.
"Oh fuck yes," she moaned loudly as I pushed the toy deep into her once again. I left the vibrator deep in her, humming away as I reached for another, intending on teasing her nipples with another of the toys. I pushed off the bed to stand up and moved slightly farther up the bed so I was even with her tits. I pressed the button on the new tiny vibrator in my hand and was about to reach down to press it to her nipple when a pair of arms circled me, one around my waist, the other cupping a hand over my mouth. My muffled cry of surprise went unheard over Tammy's loud moan of pleasure. I stood frozen, realizing that I had been caught in the act.
The arms loosened around me and I turned as she pulled her arms back from me to see Vicki standing behind me. She looked up at me, being several inches shorter than I am, and moved her hands to the knee length coat she still wore. She undid the coat, spread it apart and let it slide from her, leaving her nude except for the knee length boots she still wore. She held her finger to her lips to tell me to stay quiet as she reached for the waist of my sweat pants, slipping her fingers into them and pulling them down, freeing my rock hard cock. I saw her eyebrows go up in surprise at my size and then a slight smile creep to her lips.
She moved her hands to my shirt and pulled it up, letting me lift my arms to allow her to pull it all the way off. She wrapped her arms around my neck and gently pulled me down so she could whisper in my ear.
"Just do what I say and stay silent." She whispered before releasing my neck and sliding down to squat in front of me. She pulled on my shoes and the sweat pants until I lifted my feet and allowed her to strip me as completely as Tammy was. She was still grinning when she stood up and took my hands, stretching herself out as she stepped to the foot of the bed and around it, getting on the other side and then pulling me to climb onto the bed with her. I carefully climbed onto the bed walking my knees carefully toward her until she stopped pulling, leaving me kneeling between my sister's spread legs. Vickie let go of my hands and reached for the vibrator protruding from my sister and slipped it slowly out.
"Oh god no fair. I was getting so close," Tammy moaned loudly.
