Note: This story was dynamically reformatted for online reading convenience.
 
 `Sub'stitute F masturbation exhibitonism, MF

   [girl is commanded to have fun.]

   I called you at the office just after lunch.  You'd been working out at
the gym and your body was feeling good.  You didn't really feel like
settling down for work that afternoon.

   "OK, then leave work early," I suggested, "and meet me.  We'll go for a
drive."

   "I'll have to call hubby and tell him I'll be late then," she agreed.

   I saw her coming out of her office building about 30 minutes later.  She
was dressed in the lovely green dress that she knew I liked.  She smiled
when she saw my open-top sports car and hurried over, getting into the
passenger's seat.  She kissed me briefly and gave me that `hungry' look.

   "We're going down the freeway.  OK?" I said, sternly.

   "Yes, Master.  Whatever you want."

   I was pleased.  She'd slipped into her submissive role very quickly.  We
both knew it was only a game we played occasionally, but it always added
spice to our already incredibly erotic relationship.

   I drove carefully out onto the freeway heading south towards a motel I'd
booked for the afternoon and evening.  It was a `no-questions-asked' sort
of motel with no security cameras to catch us out.  But first - the
freeway. I was going to tease her and bring her to the boil.  I knew her
emotions and body would already be running in high gear, but I wanted her
to crest and peak several times on the way.

   "Take off your panty hose!" I commanded.

   "Of course, Master," she responded with a smile.

   "Don't smile - I'm going to get you to...."

   "I'm all yours, Master," she agreed, humbly.

   Out of the corner of my eye, I watched her kick off her shoes then
slowly pull up the hem of her dress, exposing her delicious thighs.  She
lifted the material higher and higher, until I slowed down while passing a
truck driver and drove alongside him for a while.  She looked at me
questioningly, knowing that the truck driver, situated so high above my
car, would have a good view of what she was doing.

   "Continue, slave!" I commanded.

   She grabbed the material of her black panty hose, lifted her butt from
the seat and slowly eased them down her thighs.  The truck driver blew his
horn in appreciation, and I could see him on the 2-way, probably letting
other truckers along the freeway know about what was going on.  She bent
down to pull her panty hose completely from her legs and feet.

   She tossed the little piece of material into the back seat where it was
nearly blown out by the wind.

   "Spread your legs open - for him - NOW!" I ordered.  "Let your seat back
down and lie back."

   Fixing the seat, she was now really getting into her exhibitionist role
and lie back, her legs spread wide apart, her skirt bunched around her
waist.  I noticed that the tiny sliver of material that remained between
her legs was already soaking wet.  She smiled, not at me, but up at the
truck driver, who was leaning out of his cab window and leering down at
her.

   "Use your fingers and cum for him," I ordered.

   She nodded, past the point of caring what anyone thought - this woman
was extremely horny.  Her fingers slowly ran down her body and pressed
against her tiny panties.  The guy blew his horn again, and grinned at me.

   She slipped her fingers under the waistband of her panties, moaning
noisily as she touched her clit.  I knew it would take her just seconds to
cum.

   "Make it last!" I demanded.  "Give him a real show!"

   She eased back, wondering how to stop her imminent orgasm from rushing
through her body.

   "Pull your panties aside!  Show him your pussy!"

   This few seconds gave her some relief, but as soon as she'd done what I
ordered and her fingers returned to her clit, she was right on the edge of
orgasm again instantly.

   The truck driver's horn was blowing almost continually as he watched her
stroke herself and then convulse into raptures as a huge orgasm took her
apart.  Her juices squirted vigorously and soaked the leather seat.

   "Good, slave," I giggled, speeding up and leaving the truck driver
behind.

   She remained lying back with her legs open and her cum juices everywhere
until I pulled into a gas station.  As the attendant came over, she sat up.

   "May I please clean up, Master?" she asked, demurely, making sure that
the guy could hear.

   "Of course, slave, but be quick."

   As she put her clothes in order and got out of the car, the attendant
stood aside for her.  He closed the door and, on my nod, realized that I
was allowing him to follow her.  He was a good-looking guy who might give
her some fun.  He grinned and walked up, getting close behind her as she
reached the ladies bathroom.  He turned to look at me as he followed her
inside.

   I quickly got out and followed the pair, quietly entering the bathroom.
The pair were in one corner.  She was on her knees and the guy already had
his big erect cock out pointing at her face.  It took her seconds to engulf
his hard shaft completely in her mouth.  His groans soon filled the air as
she expertly and quickly gave him probably the best blow job of his life.
As he was about to orgasm, she let him pop out of her mouth.

   "Master wants you to shoot your cum all over me," she smiled, stroking
his shaft until with a loud cry her erupted into orgasm, showering her and
her lovely dress with a big load of cum.

   The guy quickly put his clothes in order again and thanked her, before
pushing past me onto the gas station forecourt again.  He was breathing
very heavily.  I followed, letting her sort herself out and rejoin me when
she was ready.

   "Gas is free," the attendant grinned.  "Best one ever!  When will you
pass by again?"

   I smiled and said nothing.  She returned, unable to disguise the fact
that she was covered in cum.  At least there was none in her hair.

   Soon back on the freeway, she again lie back and lifted her dress.

   "Slave, sit up!" I demanded.  "I did not give you permission to pleasure
yourself again."

   She sat up, returned the seat to the upright position and made her dress
cover her legs properly.

   "Sorry, Master," she apologized.  "It's just..."

   "It's...nothing.  You must learn to only do what I tell you!"

   "I understand, Master.  It will not happen again."

   We drove on in silence for about 30 minutes.  I could see that she was
simmering with arousal.

   "Loosen your top," I ordered.  "Pull out your breasts and play with
them."

   We were closing up on another trucker and I made a point of slowing down
just after I'd past his truck.  By then, she'd unbuttoned the front of her
dress and pulled it open, to reveal her bra-less and totally gorgeous
breasts.  Her nipples were already hard, indicating her extreme level of
arousal.

   "Now play with your nipples and make yourself cum," I commanded.  "When
you are almost there, pull up your dress so he can watch you squirt."

   "Yes, Master," she nodded, thoroughly enjoying her `humiliating'
experience.

   I glanced up at the trucker, whose eyes had no interest in the road
ahead.  He was focused entirely on her wonderful show as she began to pull
and tweak her nipples erotically.  I had to shift in my seat as my hard
cock was now bursting to get out of my shorts.

   She moaned noisily as her orgasm built quickly.  Whether the trucker
could hear her or not, he blew a huge blast on his horn.  Then she grabbed
for her dress hem and pulled it up, baring her pussy for him to see.  She
cried out with a loud scream as her orgasm burst.  Her juices squirted out
in volumes all over her legs and the car seat, while the trucker blasted
away on his horn with excitement.

   As soon as she'd finished, I pressed my foot on the accelerator and we
sped away down the freeway.  I glanced over to see that she had the look of
complete satisfaction on her face.  Her breasts were still open to the air
and her soaking thighs were bare and uncovered.  We were driving past many
truckers, all of whom blew their horns in appreciation as we sped past.

   "Put your clothes in order," I demanded, suddenly, "and sit up
straight!"

   She looked at me in surprise, but immediately did what I had ordered,
her fingers trembling as she tried to fasten up the front of her dress
again.  We drove on in silence for another 15 minutes or so, passing many
trucks along the way.  It seemed to be almost a continual line.

   I was enormously aroused by what she was doing for me, my cock aching
inside my tight shorts.  I needed relief.

   "Slave, turn so you can unfasten my clothes!" I demanded.

   "Yes, Master.  Of course!" she replied, willingly.

   She shifted in her seat and her hands began to unfasten my belt.  She
eagerly pressed the bulge in my shorts.

   "Master is very horny," she giggled.

   "Slave, do not comment, just do your job!" I said roughly, pulling her
hand away from my cock.

   She slowly loosened my belt and then carefully unzipped my shorts. 
Whether she was expecting to find underwear or not, she was gentle.  In any
case, I was free and my cock sprang into the open violently.  She gasped in
sheer lust as it just stuck up in the air before her eyes.  I'm not huge,
but big enough, and my cock was already weeping pre-cum from the enjoyment
of her previous shows.  I knew she'd not be able to resist enjoying several
orgasms while she played with my cock in the car today.

   "Suck it, slave!" I ordered, "but do it slowly while I interest a few
truckers."

   She shifted in her seat so she could bend right down in my lap.  She
held my cock tenderly, feeling it throbbing nicely.  I groaned and tried to
concentrate on driving.  While she busied herself licking up my pre0-cum
and exploring the crown of my cock slowly with her tongue, I drove up
beside a large truck and ran parallel with the cab.  Soon, the trucker was
leaning out his window watching her performance.  She dropped her head down
suddenly on my cock, taking me deep inside her mouth in a single push.  I
almost screamed with pleasure as she then clamped her lips tightly round my
shaft.  The trucker blew his horn loudly as he watched.

   I saw that there was just a long queue of trucks ahead so I drove slowly
up to the next one and slowed down alongside his cab.  She was bobbing her
head up and down deliciously on my cock, her hands stroking me expertly
whenever there was enough of my for her.  I was in heaven and she knew it.

   "Lift up your skirt, slave," I commanded, wanting to give the truckers
even more to watch.

   I looked across eagerly as she bared her beautiful butt to the trucker.
He gave a long blast on his horn.

   "Take it all off," I demanded.  "I want you naked!"

   She backed off my cock momentarily, but only to pull her dress
completely from her body.  She dropped it to the floor and she was naked
now.  The trucker almost lost his sense of direction as he veered across to
the emergency lane, giving the longest blast on his horn.

   She immediately sucked my cock deep into her mouth again and resumed her
expert blowjob.  I wanted to cum, and cum hard and I wanted her to swallow
it.  I drove a little faster, indicating that I wanted to pull into the
next parking area.  At least six of the truckers followed behind me,
gathering as close as possible so that they all could see her and what she
was doing to me.  I was so close to cumming as I looked around and saw
their excited faces.

   "Now, slave, invite them all here," I ordered.  "You will suck each one
of them until they cum in your mouth or over your body."

   "But, Master..." she began to protest.

   "You will do this, slave, or I will leave you with them to take your
chances."

   I looked around the group of truckers and saw that some of them were big
enough to frighten her.  She stopped sucking me, with a sad look on her
face, but then she beckoned the nearest trucker down from his cab.  I
quickly zipped my cock back into my shorts.

   "No touching!" I said sternly, "Just let her give you a bj."

   The guy nodded dumbly, and quickly unzipped his clothes to present her
with a nice size already hard cock.  As she leant out of the car to take
his cock in her mouth, several of the other truckers gave a cheer and began
to get out of their cabs.  I grinned at them beckoning them over to stand
beside the car.  Within about a minute, the first guy grunted loudly and
began to spurt his cum in her mouth, while she swallowed greedily.  Being a
real addict for cum, this would be no problem for her, I realized.  She
called another guy over who had already pulled out his cock and was
stroking it.  She began to suck him off expertly and soon had him spurting
all over her face.  It took her about 15 minutes to get all the guys to
cum. Each of them looked at her and then at me expectantly, but I waved
them away.

   "Any more will cost heaps," I told them, as she settled back in her
seat, covered in cum and grinning like a cat.

   They all looked disappointed but happy as we drove off.

   "Get dressed!" I commanded.  "There's a police car ahead."

   Slowly, she pulled her dress over her exquisite body, just as we drew
alongside the police car.  I waved to them and drove on, carefully not
exceeding the speed limit.

   Eventually, and with her dress held tightly round her, we reached the
motel and checked in.  The bedroom was nothing special, but as we only had
a couple of hours, it would do.

   I tore off her dress roughly and pushed her onto the bed.  She lie there
whimpering with pretend fright.  We'd played this way several times before,
but never when I was so unbelievably horny.  Her playing with those guys
had almost made me cum in my shorts.  I took out the silk ties from my bag
and soon had her tied spread-eagled on the bed, her wonderful pussy and
lovely breasts just waiting for my attack.

   Also in my bag, I had two plastic clothes pegs which I soon attached to
her hard erect nipples.  She smiled at me as the gentle pain engulfed her
with pleasure.  I knew that if I played with the pegs while they were
attached to her nipples she would soon be ready to cum.  I admired her
pussy, which I'd done countless times before, wondering why her hubby was
not one to play with her like I did.  I took out her favorite vibe from my
bag - a long black one with a clit-tickler.  She was completely soaked
anyway, so it was easy to just push the vibe slowly inside her pussy,
position the tickler on her engorged clit and switch it on at low speed. 
She groaned deeply as the vibes attacked her.  Now I took out my special
strap that bound the vibe firmly in place in her pussy.  I'd not used it
before, but the girl in the adult shop assured me it worked, and grinned
broadly as she offered to demonstrate it.  I tied the vibe tightly in place
and just smiled.

   "Now, slave, you make cum as often as you like.  I'm going to watch TV."

   I brushed my hands across the two pegs on her nipples and enjoyed
hearing her deep moans of delight.

   "Master?" she asked.

   "Did I give you permission to speak?" I asked coarsely.

   She kept quiet thereafter, except for her moans of pleasure.  I switched
on the TV and settled down to watch the movie I'd ordered at the desk.  It
was delicious hard porn of three girls and a guy.  I knew it was a turn on
for us both, so I'd made sure she was in a suitable position to watch.

   It took less than a couple of minutes for her to experience her first
orgasm, her juices squirting out copiously over the sheets as she squealed
with pleasure.  From then on, she orgasmed every few minutes, screaming and
crying as her body writhed and wriggled with the spasms.  Together with her
orgasms and cries, the movie was exciting me almost beyond belief and I
pulled out my cock to masturbate slowly.  She gurgled when she saw it, and
almost said something.  My look warned her to keep quiet.

   Sitting there, stroking my cock while she orgasmed wonderfully and often
beside me was like being in a super-orgy.  I wanted to cum so much, yet I
wanted to prolong the excitement as long as possible.  Pre-cum was
literally pouring from the tip and I brought myself almost to orgasm so
many times that I lost count.  I also had no idea how many times she had
cum.

   However, when the guy in the movie had cum in each one of the girls and
they made a daisy-chain to lick each others pussies, I was ready.  With her
watching the movie closely, her mouth and tongue following the girls as
they licked each other and the guy's cum, I moved to the bed and unstrapped
the vibe.  She looked disappointed as it slipped easily from her soaking
pussy.  I also removed the nipple clamps and kissed each nipple tenderly. I
finally released her bonds and pulled her into my arms.

   "That was unbelievable," she agreed.  "The best role play we've ever
done."

   "Role play?" I giggled.  "That was real!  Now let's have sex -
deliciously, slowly and for hours."

   We did, spending all the rest of the afternoon and evening making love
numerous times.  I simply stayed hard and serviced her in whichever
position and place she wanted me.  At about 6 pm, she called her hubby to
tell him she would be late, then we continued.  She orgasmed to complete
exhaustion, cumming repeatedly on my hard cock and making me cum so many
times that even I could only supply her finally with a little dribble of
cum as I sank to the floor, wiped out.

   We must have then slept for several hours as it was midnight before we
awoke.  How was she going to explain this to hubby on her return.  We drove
back and kissed passionately at the end of her street.  I slept well that
night!

   THE END

   [Anyone with any comments, or ladies/girls who would like to chat with
me, please contact me on rockyhard4uc@gmail.com - I would love to hear what
you think about my stories.  Thank you.]