Note: This story was dynamically reformatted for online reading convenience.
 
 Disclaimer: this is a work of fiction
Emily and Anna's parents go out of town leaving the three girls to their

own devices.  Anna is forced to play the part of the baby girl.

   -------------------

   Emily and Sara had become inseparable.  Like most days, Sara had come to
meet Emily at the mall as she got off of work.  Today they were going to go
shopping and both girls were excited.  They went to the department store
and walked around until they found the baby section.  Emily's parents were
going out of town for a couple days, leaving Emily to babysit for Anna. 
Emily and Sara thought that if they were going to babysit they needed a
baby, and Anna would have to do.  They found some cute diapers with pink
hearts on them and added them to their cart.  Plastic pants were a must,
and they found a three pack on sale.  In the cart it went.  They also
purchased some pacifiers, plastic sheets, a baby bottle, wipes, and powder.
Emily kept the stuff in the trunk of her car until the next day when her
parents left.  It would be a long holiday weekend, they had the house to
themselves, and Emily had arranged for someone to cover her shifts at work.

   Sara had arranged to spend the weekend at Emily's house and Emily went
to pick her up.  When they got back to Emily's house they had some time to
prepare before going to pick up Anna from soccer practice.  They covered
Anna's bed with plastic sheets.  They went into her drawers and took all of
her clothes, hiding them in Emily's closet.  They replaced her clothes with
the pack of diapers and plastic pants.

   Anna didn't have much in common with either Emily nor Sara.  They were
'book worms' as she would call them, while she preferred sports and being
popular.  Therefore Anna didn't spend a lot of time hanging out with her
big sister and her girlfriend.  That being said, their sexual interests
definitely overlapped, and so Emily and Sara would often include Anna in
their games.  They hadn't old Anna of their latest idea though, and they
wondered how she would react being forced to wear only diapers all weekend
long.

   Emily and Sara pulled up in the park parking lot and waited for Anna. 
Eventually she came, panting and sweaty, and flung herself into the back
seat of her big sister's car.  She immediately kicked off her shoes and
started taking off her long socks and shin guards.  "You smell ripe!" Emily
commented.

   "Does baby need a bath?" Sara chimed in.  Sara and Emily started
laughing while Anna wondered what was so funny.  When they got home Anna
went straight to the bathroom to take a shower and Sara and Emily just
waited.  After her shower, Anna walked naked into bedroom.  A few minutes
later Emily and Sara could hear her screaming.

   "Emily!  Where are my clothes??" The girls laughed and made their way
into Anna's room.  They pulled back the covers of her bed, revealing the
plastic sheets.  Emily sat down on the bed and patted the spot next to her.

   "Come here baby, let your mommies take care of you." Anna was a bit
suspicious, but the plastic sheets gave her some idea of where this was
going and it made her pussy itch.  She followed her sisters instructions
and lay down on the bed, on her back with her knees bent.  Sara retrieved a
diaper from the drawer and together, she and Emily put it on the willing
Anna, covering her cute pre-teen pussy and ass.

   They finished diapering her and put a pacifier in her mouth which Anna
nervously started sucking on.  Emily began to tell her little sister the
plan.  "Your mommy and I have decided that since we're babysitting you, you
are going to be our little baby for the weekend.  This means you'll wear
only your diaper and plastic pants, you won't leave the house unless we
take you somewhere, and you won't speak - because baby doesn't know how to
speak." Anna started to lift her hand to remove the pacifier from her mouth
so that she could object but Sara held her arms down and shushed her,
telling her it would be all right in a soothing voice, as one would a baby.
"We know you had plans tomorrow with your friends, but your mommy and I
already called to cancel them.  We also let your soccer coach know that we
were going on a trip this weekend, so you wouldn't make it to the skirmish
tomorrow."

   Anna didn't like that they had canceled all her plans, but at the same
time she knew it would be a rather erotic weekend, the thought of which
started to dampen her lady bits.  She reluctantly assented to the rules
with a nod of her head.  Together they went downstairs and set up camp in
front of the TV.  Sara and Emily sat on the couch and made little Anna sit
on the floor in front of the couch.  After a few minutes the relatively
cool air in the house started to bother Anna.  It made her nipples stand up
straight and raised some goosebumps on her skin.  Anna was a little nervous
about spending the entire weekend in only diapers, not used to showing her
chest that much, but she was happy that Emily and Sara both liked to look
at her breasts.  She was the youngest but her chest was the most developed,
Emily and Sara both being rather petite.

   After a few more minutes Anna started to get cold so she took the
pacifier out of her mouth and said "Can't I have a shirt?  It's cold in
here!" Emily and Sara looked at each other, not believing the insolence of
their little girl.

   "Now we told you there was to be no talking.  And you've interrupted the
show your mommies were watching!" Emily patted her lap as she said this and
Anna came over reluctantly.  Emily grabbed her and threw her down across
her lab.  She held her back down with one hand while the other undead her
diapers until they flopped open, exposing her cute little butt.  Emily
lifted her hand and brought it down hard.  Again and again she spanked Anna
until Anna was crying out in pain, struggling to get free.  Emily didn't
stop until Anna's bottom was bright red and her eyes were wet with tears.
She then kissed each of Anna's butt cheeks and refastened her diaper. 
"That's what little girls get for not following the rules." Emily said with
a smile.

   Sara had fetched a blanked and sat at the edge of the couch.  She
covered herself with the blanket and held it open, motioning for Anna to
come underneath.  Anna did so, and spent the next half hour or so snuggled
up to her nice mommy under the blanket.  Emily finally got a little jealous
and apologized for being so harsh, tickling little Anna until she laughed
and squirmed.

   Emily and Sara cooked a frozen pizza for dinner, and Anna began to get a
little fussy when she realized that they weren't offering her any.  "Is
baby hungry?" Emily asked.  Anna nodded her head while eying the pizza.

   "I'll get it." Sara said, and disappeared into the kitchen for a couple
of minutes.  When she came back out she was shaking a baby bottle full of
formula, making sure it was all mixed together good.  She handed it to Anna
who took it reluctantly.  Sara noticed the look of disappointment on her
face and said, "I'm sorry honey, neither of your moms are lactating right
now, the formula will have to do." Anna took a tentative taste of the
formula, sucking on the plastic nipple.  She made a face and put the bottle
down.  She wandered off and sat in the corner figuring they would have to
feed her real food eventually.  Sara and Emily finished their pizza,
figuring Anna would have to eat the formula eventually.

   Once they cleaned up from dinner they checked to see if Anna needed
changing.  Sure enough her diaper was wet, so they took her upstairs and
layed her out on her bed for changing.  They removed her pee soaked diaper
(which Anna had loved wearing) and took out the container of baby wipes. 
Sara and Emily quickly tossed the wipes aside however, explaining to baby
Anna that they wanted to make sure she got very clean so as to not get a
rash.  And so Sara and Emily began to clean the nether regions of their
little girl with their tongues.  They made sure to get every nook and
cranny, paying special attention to the little clit at the peak of their
baby's pussy.  After Anna's body shook with an orgasm, they put a clean
diaper on her and told her to go play, patting her on the butt as she
waddled out of the room.  Sara and Emily were concerned that she hadn't had
anything to eat for dinner, and so they discussed their options until the
settled on a plan of action.

   Anna was downstairs watching TV.  She was being good, so both Sara and
Emily went to the kitchen to prepare a meal for her that they hoped she
would like better.  They got out the blender from one of the cabinets. 
Emily pulled down her pants and squatted over the pitcher.  She pushed
until a turd started to slide out of her ass.  She had been avoiding the
bathroom for days, so she knew she had lots in her.  A good sized lump of
poo fell into the pitcher and she stood up (wanting to save more poo for
special mommy time later).  Sara then took down her pants and emptied her
blatter into the blender pitcher, covering Emily's poo with her bright
yellow urine.  For good measure, they also threw a laxative pill into the
mix.

   They put the pitcher onto the base of the blender and turned it on. 
They weren't sure what type of consistency to expect, so they both watched
with wide eyes and the poo and the pee started to mix into a brown sludge.
After a minute they turned it off and opened the lid.  Emily stuck her nose
in and took a whiff, vomit immediately crept to the back of her throat. 
She pulled her nose away and managed to swallow the vomit back down.  They
stuck a spoon in to test the consistency and to their delight it was about
the same consistency as the baby formula.  They emptied Anna's bottle and
rinsed it out.  They pored in their new formula and screwed the nipple cap
on tight.  They grinned devilishly at each other and Sara picked up the
bottle as they went to the TV room to find Anna.

   "Anna honey, we know you didn't like your din din so we made you
something else." Sara handed the girl her new bottle and Anna eyed it
suspiciously.  It was dark and looked almost like a chocolate milkshake. 
Tentatively Anna put the bottle to her lips, figuring anything had to be
better than that formula they had tried to give her.  She started to suck
and a minute later made a horrible face.  She pulled the bottle from her
mouth and looked up at her new mommies with horror.  "Now baby, finish your
bottle or you'll need to get punished again." Anna's ass still hurt from
the last spanking, she wasn't sure if she could take another.  Reluctantly
she put the bottle back to her mouth and began to suck.  She got through a
good deal of it before her stomach had had enough and a torrent of vomit
sprayed from the poor girl's mouth, cascading down her perky tits, covering
her nipples and stomach in a yellow-brown mess.  She was almost relieved,
knowing at least that this would be the end of her bottle ordeal.  But
Emily only said, "You poor thing.  Finish your bottle and then we'll get
you cleaned up.  Your mommy Sara will get a rag in case you spit up again."


   Anna looked in Emily's eyes and knew that she would regret it if she
didn't do what she was told.  Covered in vomit and gently crying, Anna
forced her way through the rest of the bottle until it was all gone.  Her
vomit was soaked into her diaper by now, and she was exhausted from
throwing up so much.  As Emily carried her up to her bedroom her bowels
gave way and she emptied them into her diapers, the soft warm poo cradling
her genitals, making her feel warm, and horny.

   Emily lay her baby sister on the bed.  As her ass hit the mattress the
poo was forced to move forward in her diaper, slipping between her legs and
sliding up against her clit.  She shuddered with the stimulation.  She was
slightly furious at her sister and Sara for making her eat that mess in her
bottle, but she couldn't stay mad at them as she anticipated how her next
orgasm would come.  As she settled in, Anna's hand started to slip
underneath her diaper in search of her clit, but Emily saw this and pulled
it out, slapping it hard.  "Baby girls do not touch themselves!" she said
firmly and then for good measure stuck her finger in Anna's face and said,
"No!"

   Just then Sara walked in the room.  "What did she do?" Sara asked Emily
with a look of concern on her face.

   "Baby was touching herself."

   "Tsk.  Tsk.  I think we'll have to punish her" Anna whimpered.  She
hoped this didn't mean another spanking because that really hurt the first
time.  "For starters she'll have to stay in those dirty diapers for a while
longer.  Only good girls get clean diapers." Anna didn't mind the sound of
that, in fact she kind of relished the idea.  Her warm poo was spread all
the way around her hips and between her legs, and it felt amazing.  "And
little girls who use their hands loose their hands." Anna was not sure what
that meant but she didn't like the sound of it.  Emily and Sara positioned
themselves on each side of her bed.  They reached down and each pulled out
from under her bed handcuffs which they fastened to Anna's wrists before
she knew what was going on.  Anna was impressed with their speed.  They
overpowered her and pushed her arms down and back, fastening the other ends
of the cuffs to her bedposts.  They propped a few pillows under her back
and head so that she could see around the room.  Her feet were free, but
with her arms like that she was definitely stuck.

   With Anna tied down like this the two older girls could do anything they
wanted to her - anything their sick little minds could dream up. 
Unfortunately for Anna what her captors wanted most was anything naughty,
sick, or depraved.  They would stop at nothing to get off, and Anna was a
little apprehensions about how they would use her to do it.

   The girls started with Anna's breasts.  Being the largest of the three
of them, both Emily and Sara were secretly jealous.  They longed to know
what it was like to have more cleavage, even if just a little more as was
the case with Anna.  The girls flicked their tongues over Anna's nipples,
tickling them and stimulating them until they stood up.  Then they took her
full breasts in their mouths, as if they were trying to devour them.  They
licked and sucked until her breasts were clean of her vomit and Anna was
moaning softly.

   As the girls were standing over Anna, admiring her, Emily suddenly got
the urge to sneeze and she did not fight it.  Neither did she cover her
face or turn her head, but instead sneezed directly onto Anna's chest,
spraying her breasts with a fine mist of saliva and mucus.  She sneezed
again and then the feeling left her and her nose stopped itching.  This,
however, gave her an idea.  She glanced at Sara with a grin and leaned in
over Anna's face.  Her lips moved to Anna's lips and they kissed deeply. 
Then Emily pulled her head up a couple of inches, put her hand to her nose
and pressed in on one of her nostrils.  When she was in this position it
dawned on both Anna and Sara what she was about to do.  Anna was horrified
but Sara looked on with great interest.

   Emily blew for all she was worth and the entire mucusy contents of her
left, congested nostril sprayed over Anna's face.  One particularly large
bugger lodged in the corner of Anna's left eye and clung there.  Emily
repeated the process to make sure she had got it all and then moved to her
right nostril.  Again she blew and again Anna's face got covered in snot -
her sister's nose muck.

   Sara found this quite amusing, and followed Emily's example, but this
time Anna's chest got covered with snot.  Unfortunately for Anna it was
allergy season and both girls were fairly congested.  When they were done
they stepped away from Anna and admired their handiwork.  Anna was
beautiful like this.  Emily reached into her pocket and pulled out her
phone.  A few seconds later and she was snapping picture after picture of
her little sister, handcuffed to a bed, naked except for a pair of poo
filled diapers, covered in her own vomit and two other girls snot.  While
she and Sara checked out the photos on the phone, Anna did her best to not
complain, knowing it would only be worse if she did.