By sub01

Mary!

Carol froze in mid stroke as she humped my thigh.  Oh how delightfully mortified she looked at the sound of my sister's voice!  I couldn't have planned it any better!  That one moment made everything Carol had done to me -- the teasing, the denial, the torment -- worth it.  Well, almost worth it, anyway.  I imagine Carol had probably forgotten all about Mary in her haze of arousal, and now the sinking look on her face made me smile.  I saw in her eyes the dawning realization that our secret little indulgence was no longer so secret.

"I see you're enjoying my brother's other side," Mary said with amusement as she came into the kitchen.

Carol looked absolutely mortified, and also quite helpless to get out of her bonds despite her struggles.  "Mary, I--"

"A few minutes alone with him, and look at you!  Or is this something you've hidden from me all along?"

I could see that Carol was blushing furiously.  "No, Mary!  I just, um, well..."  Carol didn't finish her thought.  There was really nothing she could say, no way she could explain her way out of this (at least without stating the obvious).  As she seemed to search for something to say the cucumber finally slipped the rest of the way out of her pussy and plopped to the kitchen floor.

"Oopsie," Mary giggled, "it looks like you've lost something!"

I pulled my leg from between Carol's and she immediately found her voice again.

"Brian!  Don't!"

"I told you not to let that thing slip out."

"But I'm so close!  Please Brian, I couldn't help it!  It's not fair!"

I smiled but said nothing.  As Carol shifted desperately, trying to find any sort of contact that she might use to bring herself off, Mary came over and slipped her arm around my waist.  "Having fun?"

"I was just working on getting her to tell me where the key to your belt is."

Mary smiled.  "Well, if you want to do that then make sure you pay some attention to her nipples... they're just about her most sensitive part."

"Mary!" exclaimed Carol.

"Well, they are," giggled Mary.  "I think they're second only to her clit."

"Mary!"

"Well, it's true."

"But you didn't have to tell him!"

I watched as Mary moved closer to Carol.  There was something different in her smile now, something devious... something playful.  "No, I didn't have to tell him, Carol.  But I wanted to.  Besides, I'm kind of curious to see what he has in mind for you."

"He doesn't have anything in mind for me," Carol insisted.  "Right, Brian?  Tell your sister you're going to let me go."

I couldn't help but smile.  "But I'm not."

"Brian!"

"Well, I'm not.  Not until you tell me where the key is."

Carol hesitated.  "Well, I'm not going to tell you.  So you may as well let me go."

I shrugged and turned to Mary.  "So... her nipples are sensitive?"

"Terribly sensitive," Mary smiled.  "Here, see for yourself."  She leaned down and licked gently around Carol's left nipple, teasing her for a moment, the gentle caress of her tongue looking more like the familiar touch of a lover than anything.  But Carol seemed to sense that something more was coming and she squirmed against the counter in vain, helpless to move away.  Something more was indeed coming.  Mary pressed her lips to Carol's nipple and bit down gently, making Carol gasp.

"Ow!  Mary!"

"See what I mean?" Mary giggled.  She bit down again gently, this time with her teeth bared so I could see.  Again Carol winced.

"Oh, Mary!  Please, don't do that!"

"Oh hush, you little slut," Mary giggled.  "You know perfectly well how wet you get when I do this."

I couldn't just stand by and let Mary have all the fun, so I leaned in with my head next to hers and pressed my lips to Carol's other breast.  My lips met soft, luscious skin, my tongue flicked and teased, and as my sister did the same I bit down gently on Carol's nipple.  Then harder.

"Ow!  Oh, please!"

She really was sensitive.  A mild bite made her squirm so delightfully, and a little harder made her gasp and protest. 

"I've got an idea," Mary whispered in my ear.  "Don't go anywhere... I'll be right back."

While Mary disappeared through the doorway I straightened back up and cupped Carol's breasts, caressing them softly.  I stiffened just to feel her in my hands, her skin so smooth and unblemished, her breasts so delightfully full.  Even the gentle way her breasts sagged so naturally was arousing.  I explored her slowly, working my way in to her prominent nipples.  So dark and inviting.  I took them between thumb and forefinger and pinched gently, delighting in Carol's stifled gasp.

"Brian, please..."

"Yes?"

Carol gave me a seductive look.  "Please Brian, won't you untie me now?  Come on, you've had your fun."

I chuckled.  "Had my fun?  Oh no, Carol... we're just getting started."

*    *    *

Mary came back into the kitchen carrying a small fabric bag, and with a devilish smile she dumped its contents out onto the counter beside Carol.  I felt my heart skip a beat.  Oh god... clothespegs!  Lots of them.  Dozens even.  Thirty or forty, easily.  Maybe even more...

Carol's eyes widened and she began to struggle anew.  "Mary, don't you dare!"

But my sister only smiled.  She picked up a clothespeg and held it up to Carol's face, trailing its tip over Carol's right cheek softly, teasingly, winking at me as she did it.  "I'll bet these will get her to tell us where the key is."

Carol blushed.  "Mary, don't be silly.  Put those things away right now."

Instead, Mary held the clothespeg out to me.  "Would you like to do the honors, honey?"

"With pleasure!" I chuckled.  I took the clothespeg from Mary and held it poised near Carol's left nipple.  "You still haven't answered my question from before, Carol."

Carol eyed the clothespeg warily.  "What question?"

"Where the key is..."

"I told you."  Carol's voice was soft, more unsure now than before.  Her eyes didn't leave the clothespeg.  "Her pussy's mine, Brian.  Now don't you dare--"

I smiled and shrugged.  And let the clothespeg ease shut on Carol's left nipple.

The effect was like lighting.  Carol paled and gasped in shock, her face scrunching up in pain.  "Fuck!  Oh fuck, that hurts!  Brian, please!"

"Please what?" I asked sweetly.

"Take it off!  Please!"

"What?  Put another one on?"  I reached for another clothespeg.

"No!  Take it off!"

I chuckled.  "You forgot to say ‘please', Carol."  And I let the second clothespeg ease shut on her right nipple.

"OW!  Oh my god!"  Carol's face was no longer pale but now deeply flushed.  In her eyes I could see a glimpse of her discomfort, which was mirrored so delightfully by her whimpering.

"Feel good?" I chuckled, even as I reached for yet another clothespeg.

"Brian, please!"

I hesitated.  "Please what?"

"Please, take them off!  Oh my God, they fucking hurt!"

"Wrong answer!" I chuckled.  I moved to place the clothespeg on Carol's right breast, just under her nipple, but Mary suddenly stopped me.

"Maybe we should put a couple on her pussy," she suggested slyly.

I smiled.  "It's not her pussy any more."

"It's not?"

"No.  Tell her, Carol."

Carol didn't say anything, only whimpered and squirmed in her bonds.

"Tell her, Carol," I repeated.

Carol blushed.  "Brian, please... I can't."

"Tell her... or the next peg goes on your clit."

Carol gasped and stared at me wide eyed.  When she spoke, her voice was barely more than a whisper.  "It's... it's my cunt."

I reached over and twisted the clothespeg on her left nipple, drawing a surprised cry from her lips.  "Your cunt!" she gasped.  "It's your cunt, Brian!"

"And don't you forget it," I chuckled, letting go of the clothespeg.

Mary moved close to Carol now, slipping her hand down to play with her lover's bare pussy.  "Oh, how delightful!  This is Brian's cunt?"

Carol nodded, blushing.

"Are you going to let him do things to it?"

Again Carol nodded.

"Nasty things?"

Carol stared at the floor, her cheeks flushed, saying nothing.

"Things like you've done with mine?"

Carol said nothing.

"Well, how delightful," Mary giggled.  She stroked Carol's hair gently.  "Don't worry, you little slut... I'm sure he'll put his cunt to good use!"

I was beside myself listening to my sister talk to Carol like this.  Oh, how her words were getting to me!  After last night I never would have imagined that Mary would do anything but obey Carol's every word.  And now here she was calling Carol a little slut, talking to her as if she were as excited as I was at having Carol like this.

While I was considering this, Mary leaned close and whispered coyly in my ear.  "Do you remember that time in the kitchen, Brian?  When we had the house to ourselves, and you tied me to the kitchen table and teased me all afternoon?"

I did remember.  We'd been young and in one of our most passionate times.  Mary had loved it so much -- and hated it at the same time -- that when I'd finally set her free afterward she'd drug me straight upstairs and fucked me frantically.

"So what do you think, Brian?"  Mary looked up at me suggestively.  "Maybe we could do the same with Carol?"

Mary definitely didn't have to convince me!  The idea of having Carol tied helplessly to the table, spread eagled and open to our torment, was delightfully exquisite.  But we'd need something more than dishtowels to hold her down.

"We've got plenty of cuffs upstairs," Mary smiled.  "I'll go get them."

But I caught Mary's arm, stopping her.  "No, don't do that."

She frowned.  "No?"

"No," I smiled.  "I've got something better in mind."  I turned to Carol, reached behind her and unfastened her wrists from the cabinet door handle.  I didn't untie her wrists, though; those I left bound securely together.  "I want you to go upstairs and get those cuffs, Carol.  Four of them.  And when you come back down, I want to see you drape yourself over that kitchen table like a good little slut, and spread your cunt wide.  If you do that, Carol, I'll consider taking those clothespegs off your pretty little nipples."

Carol struggled for a moment, unsteady on her feet at being suddenly free (at least partially).  She tried desperately to work her wrists free, which she couldn't, and then instead tried to shake the clothespegs from her nipples, which she also couldn't.  "Brian, I--"

"I'm not asking you, Carol," I smiled.  "I'm telling you.  Now hurry along."

Carol hesitated and then turned to Mary.  "Mary, please!  Just untie me."  She smiled seductively.  "If you untie me, I'll make it worth your while."

"No."

I think Carol and I were both surprised by Mary's firm answer.

"No?" Carol asked.

Mary smiled.  "No.  I want to see you do what my brother told you to do."  She moved forward and traced a circle around Carol's left nipple, her voice husky and excited.  "Especially that part about you spreading your cunt like a good little slut."

"But Mary--"

Mary twisted the clothespeg affixed to Carol's left nipple hard, eliciting a surprised cry from her lover.  "Didn't you hear me, Carol?  Didn't you hear Brian?  Do we need to tell you again?"

"No!  Ow, you're hurting me!"

"Good."  Mary twisted the clothespeg a bit more.  "Are you going to do it?"

"Yes!  I'll do it!  Please Mary, I'll do it!  But please, it hurts!  Please, be gentle."

To my delight Mary only chuckled.  "Gentle?  When have you ever been gentle with me, Carol?  Now, no more of your whining.  Remember, we still have the whole bag of clothespegs."

Carol's eyes widened at the veiled threat  She started to move reluctantly for the doorway, but Mary stopped her.

"Since you were so insolent, I'm going to let you make it up to Brian and I by bringing down a couple more things.  I want you to bring down the cuffs... a gag... and the condoms."

Carol looked suddenly hopeful.  "Is Brian going to fuck me?"

Mary smiled.  "Maybe.  If' you're good and do what we say.  But I wouldn't count on it."

Carol looked almost disappointed.

"And a vibrator," Mary added.  "No, make that two, for good measure."

"Two vibrators?"

"Yes.  The big ones, Carol.  The ones you like to use on me."  Mary smiled.  "Now hurry along.  And Carol?  For every minute it takes you, we're going to add a clothespeg to your pretty little cunt."

Carol gasped at that, her eyes wide.  With a helpless whimper she started for the doorway and the stairs beyond.  But Mary stopped her.  "No, you know better than that Carol.  Crawl..."

So Carol crawled.  She didn't hesitate, didn't protest, just went without a word to her knees and began crabbing forward awkwardly, unable to crawl properly for her hands were still bound behind her back and of no use to her.  She moved slowly, taking obvious care not to disturb the clothespegs which so painfully adorned her nipples.  Whimpering as she went.  Oh how delightful...

I couldn't help but watch Carol as she half crawled, half shuffled on her knees.  I was entranced, partly by the sight of her glorious, naked breasts leading the way, and partly by the view of her sexy backside.  And it was sexy.  She was so slender and fit, her bottom so fully rounded and shapely.  I felt a surge of lust as I watched her struggle towards the doorway and the stairs beyond.

"Getting any ideas?" Mary quietly asked me with a smile.

"A few," I admitted.  Actually, more than a few ideas.  Carol's helplessness was inspiring in me a whole host of new lusts.

Mary and I followed Carol to the stairs.  She turned to us at the base of the stairs, looking back pleadingly, but we only smiled and offered no help.  With a helpless whimper Carol started up the stairs on her knees.  As she mounted the stairs, higher and higher, I got a glimpse of the tight little rosebud of her anus peeking out from between her bottom cheeks.  I stiffened at the stolen glimpse, suddenly imagining planting myself between those lovely cheeks and violating her tightness there, using her like she'd used my sister.

Mary must have read my mind because she giggled.  "Don't even think about it, Brian.  She doesn't let anyone do that."

I smiled to myself.  Maybe so.  But maybe -- just maybe -- I wouldn't give her a choice...