Trust Machines - Double Trouble
Bryce didn't know what had gotten into his wife, but something about the fashion reality show she'd been watching had made her extra-frisky.  Sarah had vanished into the bedroom as soon as the show was over, and when she showed up posing in her sexiest nightie, Bryce knew that fun was ahead.

It was a bit odd when she kept the nightie on as things started getting hot and heavy.  The fabric was so soft and smooth, Bryce had no reason to mind.  Fondling those bountiful breasts was fun with or without satin in the way.  He'd just gotten her nipples nice and pointy when the bedroom door slammed open.

"What the bloody 'ell are you doing with my husband!"

Bryce yelped, and spun to face the door.  Standing there was a curvy brunette that was the spitting image of his wife.  "Sarah?"  He looked at the one in the bed.  "Alice?  But I checked, I even nibbled at the mole behind your left ear to make sure it wasn't drawn on like last time!"

The woman in the nightie got up to stand by the one in the door.  "Which twin is which?"

Bryce tugged at his sandy goatee nervously as he made his inspection.  He prowled around the two ladies, his silver eyes seeking out the tiny differences he'd found through experience.

"Everything I can see so far is exactly the same.  I'd have to see you both naked to check the rest," he joked.

"OK."  

Soon there were two naked twins standing in front of Bryce.  He surveyed both closely, especially their bountiful chests.  They truly were identical.

"You both have bigger breasts on the right.  Alice's was on the left.  And the scars on your knees are the same.  I can't see anything different at all."

The twins grinned at each other.  "Cool.  You did know all the differences."

"But... how?  Why?"

"A Venn Machine popped up at the mall this week."

"Really?  Cool... aw, man, you two are going to be doing this to me forever, aren't you?"

They nodded.

"OK.  New rule.  If she looks exactly like my wife, she is my wife."

One of the twins protested.  "Wait, that's not..."

"Aha!  So you're Sarah."

The twins looked at each other, then linked hands and spun about several times.  "Now which is which?"

Bryce shrugged.  "If you're willing to go this far..."  He walked up to one and kissed her soundly, while giving her a good grope.  "Hi Sarah."

"Darn it, how can you tell?"

Bryce grinned.  "Lucky guess.  And you just confirmed it.  Now can we please go to the Venn Machine and change you into something distinct?  I want to finish what we started."

The twins found identical little black dresses in Sarah's closet, and put them on.  "Ready when you are."  They even had matching shoes.

Bryce just sighed, and zipped up his pants.  "You're having way too much fun with this, ladies."

At the mall, the ladies told Bryce to wait outside.  "The next time you see us you won't have any trouble telling us apart."

"You promise?"

They just grinned, and disappeared into the mall.

A few minutes later, someone who looked exactly like Bryce's wife emerged, and pulled him into the mall.  She gave him a toe-curling kiss, then spun around in front of him.  "What do you think?"

"I only see one of you."

"Look closer."

Now that he thought of it, the twins had gone out without bras on.  But this one now had support - her breasts weren't sagging, and her nipples didn't show.

"You're wearing...?"

She dragged Bryce down an access corridor for privacy, then lifted up her and slipped out of it.  Underneath was a stunning, shiny red nightie, with lots of support built into the top.

"That's..."

"My sister, yes."

Bryce ran his hands over the nightie.  "Wow.  Feels amazing."

"You should try it from the inside."  She grabbed his hands, and pressed them against her chest.  "When you're clothing, all you have is touch.  So give her a good feel."

Bryce didn't object, Sarah's breasts were his favourite part of her body.  And these definitely felt like Sarah's breasts.

Bryce slid his hands down to her rump, and gave it a squeeze.  She squeaked, and he grinned.

"Happy now, Alice?"

"How did you know?"

"Sarah wouldn't have kept her hands off my rump when I did that."

"Fooey.  She was looking forward to this as much as I was."

"Really?  She wanted you to..."

"Get you into bed while wearing her.  Yes."

Bryce shook his head.  "I don't get it."

Alice slipped her dress back on. "Want to find out what it's like?"

Bryce nodded, and she led him back out of the corridor and up to the Venn Machine.

They passed two younger women.  One was quite well-endowed, catching Bryce's eye.  The fact that her cerulean blue bra was showing through her open shirt made her that much more noticeable.

The other woman was asking, "Are you really going to wear your Mom, too?"

"I'm pretty sure that's what she wanted, Mary."

Bryce noticed she was carrying a pair of blue panties that matched the bra.  He shook his head in wonder.  

Soon, they were at the Venn Machine.  Bryce stared at the innocuous looking kiosk.  "This thing can change us into... anything?"

"Yup."

"Woah."

Alice had already put in some money and set the duration.  Two doorways appeared in the side, between a little display that showed two spinning planets.

Bryce pointed to the display.  "What does that mean?"

"Two days.  It's Friday, we've got all weekend."

Bryce shrugged.  "Fine by me.  So I just step inside?"

"Yep."

After Bryce entered, Alice walked into the other side.  She was quite surprised to find Sarah beside her.  "Oh!  Hi."

Sarah grinned, and looked around.  "I thought I heard Bryce... what's this display?"

Alice looked at it, too.  Instead of the usual image of the opposite chamber, there were two large circular icons.  One was a green circle, over two 'day' icons.  The other was a big red circle, that was slowly phasing away.

Alice touched the green icon, but nothing happened.  When Sarah touched it, the display went back to normal.  "Huh.  I guess that's to give me the chance to leave."

Bryce looked over the display.  "So now what do I do?"

"Wait for us to pick something out for you.  What could we wear as twins, though?"

Alice touched the display.  "This could be fun..."

"Oooh yes," replied Sarah.  She touched the green icon.

Bryce yelped as his body was suddenly very different.  Yet very familiar, as well.  "You turned me into one of you?"

"Yeah, now we can go out as triplets!  Just wait for the green circle to time out."

"I'll need a bra..."  Bryce touched the screen where it bubbled at him, and grinned. "Ooh, that looks comfy."  He frowned. "But there's only one of...  Bra and panties?  Foo.  Bikini?"  The green circle was down to a sliver when Bryce touched it.

Bryce walked around to the other side of the booth, marvelling at how this new body moved, and at how it felt.  He picked up the slips of red fabric from inside the other half.  "Figures.  You're distinct, and again I have no idea which of you is which."

Bryce looked at the bikini top in his left hand.  "Maybe you're Sarah."  He looked at the bikini bottoms in his right hand.  "Or maybe you're Sarah, and the top is Alice."

"Corollary to the new rule.  If you don't look like my wife, you're not.  So you're just a bikini, and I'm going to have fun wearing you all weekend."

As Bryce walked back to the car, he grinned.  "I bet the Adventurous Adults store is open late...  I need a new toy to try out this new body.  Don't worry, I'll be sure to wear you while I do it."


Epilogue: One week later
Bryce hesitated before opening the door.  The ladies had made themselves identical once they changed back, and refused to tell him which had been the top, and which had been the bottom.  They'd been paying him back by teasing him, testing him on which was which.  Every time he figured out a new trick to tell them apart, they'd compared notes and practiced...  He was done.  Last night he had to rely on guesswork, and they'd learned not to admit whether or not he was right.  He didn't actually know if the woman he'd slept with was his wife or not.

He'd admitted as much to her before leaving for work this morning.  She hadn't reacted either way, which worried him a bit.  What was awaiting him behind the door?  Only one way to find out.

Bryce opened the door, and immediately came face to face with someone who looked exactly like his wife.  She smiled at him, and posed seductively.  She was wearing a translucent black top that did nothing whatsoever to hide her voluptuous curves or the fire red bra and panties underneath.

"Ready for a big night?" she purred.

Bryce consigned himself to the tiger's den, closing the door behind him.  He looked around nervously.  "Where is..."

"My sister?"  She spun in place, showing off the outfit.  Bryce had never seen any of these clothes before.  "Guess."

"That sexy sheer top?"

"Close.  That's Judy."

Bryce's mouth worked silently for a few moments, then his silver eyes sparkled.  "You know what...  I don't care.  I hope she has fun.  I know we will."

"Finally willing to live up to your 'new rule'?  You accept that I might be Alice?"  She was smiling as she said it, and the teasing voice was gone.

Bryce grinned back, relieved.  "Yes.  You win."

"We both do."

Bryce's wife turned toward the bedroom, her swaying hips drawing him hypnotically along.  "Oh, one more corollary to your rule."

"Hm?"

"If it looks like my husband, it is.  Next weekend, you get to be the wife."

Bryce smiled, remembering how it had felt to inhabit that body.  "Sounds good to me."

"And the weekend after that... you get worn."

Bryce cuddled up to his wife, hands exploring her body through the sheer top.  "What's it like?"

She kissed him, pulled him down to the bed with her, and there were no more words.