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Measuring My Cum - 9
by Palacechief (no address provided)

***

A doctor has a mother to masturbate her son so she can 
measure his semen volume due to a medical condition. 
(F/M-teen, inc, mast, exh)

***

Author's Note: I cannot confirm whether this story is 
purely a work of fiction or has elements of truth. I 
will leave it to your imagination.

***

Part 9

"You've got a fabulous ass mom," I said, as mom's fine 
open ass cheeks with her asshole and wide open cunt with 
lips hanging down, still hovered above me.

"Thank you dear," she replied, as she milked the final 
drops of my cum into the semen beaker. 

Then, as if to tease me further, she pushed her butt 
down on my face and wriggled her pussy and ass cheeks 
over my nose and mouth, as if she was trying to wipe her 
ass over me, and then lifted her butt up again.

"Wow, mom, you sure know how to tease me with it," I 
said, in response to that.

"Well, now I know how much you like it, I might as well 
put it to good use."

Finally, she lifted her leg up over me and turned and 
sat on the floor, looking at me, whilst I still lay on 
the rug. Her large hanging tits, looked incredibly sexy 
as she sat there, kneeling on the floor.

Mom held up the semen beaker again for me to look at. 
There was only a small amount of cum in it this time.

"Well, I think you might have reached your limit for 
today," she said. "And I'm a little tired too. I think 
it's time for bed."

The wine had got to me a bit now, and I nodded in 
agreement.

"I think tomorrow, as it's Sunday, we'll review how much 
cum you have produced so far this week. And we have an 
appointment with Dr Taylor on Monday. Make sure you get 
a good night's sleep and your strength back for our 
sessions tomorrow." Then she kissed me goodnight on my 
cheek.

With that mom got up and started walking out of the 
room. She still looked incredibly hot wearing just her 
black stockings and nothing else! I wondered if I should 
ask her to wear just those and nothing else for me again 
tomorrow. That would do!

After mom left, I got up a few moments later, and went 
up to my room. In no time at all, I fell asleep.

***

I felt something nudging my arm and awoke sleepily. Mom 
was sitting on the bed in her dressing gown, smiling as 
she woke me.

"Morning, Jacob," she said brightly.

"Morning, mom," I replied, yawning.

Then I felt a bit of a draught, and something touch the 
lower part of my stomach. Mom had removed the duvet and 
was sliding one hand over my stomach down towards my 
cock in my pyjamas.

"Let's have an early session," she said keenly. "I've 
brought the semen beaker."

I couldn't quite believe she wanted to help me cum so 
early, but my sleepiness soon disappeared hearing her 
talk like that. 

Mom pulled down my pyjamas, exposing me fully from 
below, and threw them in the far corner of the bed.

Then, without further ado, she bent down her face 
towards my still limp cock and started sucking on it. 
Fuck! I couldn't believe how keen she seemed this 
morning, almost like she wanted sex!

The sensation of mom's wonderful wet mouth, tongue and 
lips on my dick had an almost immediate effect and I 
became hard as she sucked me.

"Ohhh....That's nice mom," I couldn't help saying out 
loud.

Then, seeing me get hard so quickly, mom stopped sucking 
on me, stood up, untied her dressing gown and let it 
fall to the floor. She was completely nude underneath, 
and her voluptuous, sexy figure came into full view. She 
stood there for a moment with one hand on her hip, 
striking a sexy pose, with one leg slightly angled, and 
her full, hanging, sexy boobs facing me in all their 
glory. Her thick, protruding nipples were erect, 
indicating she was aroused herself.

"Well, as you are hard already, let me give you 
something to keep you going," she said teasingly. "Your 
cock tastes so good this morning, that I want it to last 
as long as possible before you cum," she added, much to 
my surprise at her forwardness.

Mom stood next to the bed about two feet from me near 
the head end, and turned around to show me the wonderful 
round globes of her ass, and then sexily wriggled her 
butt cheeks for me from side to side as she stood on the 
spot, making the flesh there wobble and jiggle. Fuck! 
That looked so good! Then, as if knowing what effect 
this would have on me, she parted her legs a little and 
bent forward so that I could see her pussy and asshole. 
And then, even more incredibly, she placed her hands on 
her ass cheeks, and pulled them apart wider, so I got an 
even better view. Fuck!

Jezus, she was really going for it this morning, getting 
me really worked up!

Mom held this pose for a while, adding to my arousal by 
wriggling her ass from side to side occasionally, and 
then saying, "Like what you see? Does my ass look good 
like this?".

The sight of mom posing like that for me was enough to 
make me say, "Fuck, yea mom, I just gotta taste your 
asshole and pussy now, you look so damn hot. Please can 
I?"

Hearing this mom stood up properly again and said, "Yes 
you may, but only if you let me suck on that juicy cock 
of yours again. I hope you realise young man that I am 
now starting to get turned on too by all our 
activities." 

This was the first time I had heard mom admit she was 
getting turned on too, by what we had been doing to help 
me cum. I nodded, but did not say anything, so as to not 
make it seem like a big issue.

I got off the bed and stood up. Mom knelt down in front 
of me and took my erect cock into her mouth again, 
making slurping noises as she sucked on it, and playing 
with my balls with one hand. She seemed to me, to be 
getting as much out of all this now, as I was!

I didn't feel like cumming yet, which was good, but the 
sight of mom's tits wobbling and jiggling from side to 
side as I looked down at her whilst she sucked me, was 
really turning me on.

Finally, after satisfying herself on my prick and balls 
for a few moments mom said, "Ok, special treat time. I'm 
going to get on the bed on my hands and knees, with my 
ass in the air, and I'll let you play with it. You may 
lick my pussy and asshole, but no penetrating me, 
remember!"

Mom stood up and then clambered onto the bed on all 
fours, facing the window, so she was sideways on the bed 
with her ass pointed back towards me, sticking up in the 
air. Fuck me, what an amazing sight! Never could I have 
imagined a few weeks ago that my 'prim and proper' mom 
would be posing like this for me on my own bed. It was 
almost all my dreams so far, come true!

The shape of mom's large wide open buttocks, and the 
crack between her ass cheeks with her asshole and open 
cunt and lips hanging down, looked so inviting, that 
immediately I knelt down on the carpet, so that my face 
was level with her open butt, and I just started licking 
and salivating along her entire ass crack. I ran my 
tongue greedily along the insides of her buttocks, 
moving from asshole to cunt and vice versa, whilst I 
grabbed and squeezed a full handful of each butt cheek, 
one in each hand, as I did so. I was in butt heaven!

Then, satisfied for a moment at tasting her ass crack up 
and down, I decided to concentrate on her pussy for a 
while. Mom was wet, and I lapped at her cunt and pussy 
lips, opening it up with two fingers by stretching them 
wide apart and tasting the pinky, moist flesh on the 
inside there. She tasted wonderful!

"Oh yes," she cried as I did this. This was the first 
time she had openly responded to my licking her pussy. 
"Yes, Jacob, lick mommy's pussy. Taste all my dirty cunt 
juice."

Fuck! Her words really spurred me on, and my dick 
responded by jerking up more.

Then, I moved my tongue up to her asshole and gently 
darted my tongue into it a little way, as I spread her 
ass cheeks wider apart for better access. Seeing her 
brown puckered hole open up and stretch further as I did 
so, I darted my tongue a little deeper into her ass this 
time, almost like I was fucking it with my tongue. 

Mom groaned in pleasure as I did so, pushing her butt 
back into my face, apparently very sensitive to my 
tongue fucking her asshole.

"Ohhhh... Ohhhhh... yes... baby... lick my asshole. That 
feels sooooo... gooood."

I continued, responding to her pleasure by pushing apart 
her butt cheeks further so I got even better access, and 
tried to go as deep as I could into her asshole with my 
tongue.

"Ahhhh..." mom groaned again in pleasure.

Then, after a moment, I moved back to her cunt and 
licked and lapped at it some more. Fuck, this was good!

I was dying to plunge my dick into mom's open wet cunt, 
now, but I knew she would not agree. But I could also 
sense she was really in a lustful state, the way she had 
been wriggling her ass back into my face as I licked on 
her pussy and asshole.

As a second best measure I said, "Can I slap my dick 
against your butt and along you ass crack? I promise I 
won't penetrate you."

"Ok," she said, much to my surprise.

My dick jerked up in response to this. 

I slapped my hard on against mom's buttocks for a few 
moments, wiping my precum on them as my piss slit slid 
over the flesh on each, in turn. Then, the sight of her 
ass crack being so tempting, I rubbed my cock head 
against her asshole, almost tickling it. 

Fuck that was so good, I almost felt like cumming but 
held myself back. Mom had not objected to my rubbing her 
asshole with my dickhead, so feeling braver, I moved it 
with my hand slowly along and gently tickled mom's pussy 
lips with it, which were hanging down. God, her open 
pussy was so tempting, and just centimetres away from my 
cock head. I just wanted to shove it straight in!

Then, to my surprise, mom, who must have been so turned 
on my what I was doing, said, "Ok, Jacob, I can't stand 
this anymore. Stick it in my cunt, but don't cum inside 
me. We need to catch your cum in the beaker still!"

Fuck! I couldn't believe it! This was music to my ears! 
Without further hesitation, I pointed my straining dick 
directly at her gaping pussy hole, and shoved it in.

"Ahhhhhhhhh..." I cried out in ecstasy, feeling mom's 
pussy walls grip hard onto me.

I pulled back instinctively, and then shoved in again.

"Ohhh...yess," I said.

Mom was also now groaning in pleasure as I did this. I 
carried on pumping her, now a little faster, as I 
grabbed her hips for support. The feel of mom's pussy 
around my dick as I penetrated her, in and out, was 
wonderful! Imagining fucking was one thing, but actually 
doing it was a hundred times more pleasurable!

I was in the throes of ecstasy now and didn't care about 
anything, let alone making sure my cum went into the 
semen beaker.

I think mom was also in an extremely heightened sexual 
state as she was moaning and groaning with pleasure, 
pushing her pussy back into me as I shoved my cock in at 
each thrust.

"Fuck me, yes!" she said out loudly.

I was now moaning loudly too, and I just couldn't stop 
myself cumming quickly, it being the first time, no 
matter what happened next. I felt the cum rise in my 
balls, and I exploded inside her, feeling my spunk spurt 
thickly and deeply inside mom.

"Ahhhhhhh!" I shouted as I came.

Mom responded with a huge moan of pleasure too, as I 
carried on spurting inside her.

Finally after what seemed like ages, I stopped cumming 
and felt my cock go limp and I collapsed on the bed next 
to mom, who was now laying on her front with her eyes 
closed.

I had finally fucked mom and cum inside her too! 

It felt like ages before either of us spoke.

Mom broke the silence by saying in a quiet tone and 
without looking at me, "What have we just done?"

I didn't say anything for a few moments. Then I replied 
in a quiet tone too, "I couldn't stop myself, and 
neither could you I think."

There was silence for a while again.

"You're right," she said after a few minutes. "Never 
mind, it's happened now. I guess it was bound to happen 
at some point. We'll have to just get on with it. And 
we've missed getting a sample." Mom paused for a moment, 
as if thinking. 

Then she said, "Maybe we can work out an average sample 
based on all the results from the past week. But, you 
must promise me Jacob, that you will never tell anyone 
about what we've just done. Not ever."

"I won't mom," I replied sincerely. "Never."

"Good, I feel a bit better about it then." She paused 
again. "And maybe if we do it again to help you to cum, 
it won't matter so much now, as we've done it once," she 
added, much to my surprise. 

Fuck! That sounded unbelievable! Mom was ok for us to 
fuck again! 

"But you must try to pull out next time," she said, "So 
I can get a sample."

"Ok, mom" I replied, "I'll try, but it might be hard, as 
it's so new to me," I said, truthfully.

Mom didn't reply.

After a moment, I felt like going to the toilet. 

I got up off the bed and said, "Just need to take a 
pee."

I walked naked into my en-suite bathroom. Normally I 
would close the door, but somehow, I felt so relaxed 
after what we had just done that I left it open. In any 
case, you could not see the toilet part inside directly 
from the bed.

I stood over the toilet and started to piss into it. It 
felt good and relieving.

As I finished and gave my dick a few nudges to get the 
last drops out, I suddenly felt like someone was looking 
at me. I looked over at the door. Mom was standing 
there. She must have just seen the end part of my peeing 
into the toilet. For a moment the thought excited me. I 
didn't know why.

She looked at me and said, "Hope you didn't mind my 
watching."

"No, mom," I replied, truthfully, although slightly 
unnerved.

"Good," she said. "Shall we shower together? Maybe we 
can get another sample whilst we do that."

I felt a twinge in my dick as mom suggested that. I was 
already feeling a little aroused at the thought, even 
though I had cum not long ago.

"Sounds great to me, mom," I said.

"Ok," she replied. "Get in the shower and turn the water 
on. I just need to take a pee myself. You can draw the 
curtain closed after you get in the bath."

The moment mom said she wanted to use the toilet as 
well, I got excited for some reason. I felt like I 
wanted to watch her, like she had me.

"Can I watch you mom?" I asked.

Mom looked at me for a moment as if thinking, and said, 
"I don't see why not."

I got in the bath and left the shower curtain open so I 
could watch her use the toilet. Already, I felt my dick 
becoming alive at the thought.

Mom, still completely nude, went over to the toilet, put 
the seat down, and sat on it. I had never seen her 
before like this.

After a moment I started to hear the distinctive sound 
of a stream of pee hitting the water in the bowl at the 
bottom of the toilet. This went on for a minute or so, 
until mom stopped her pissing. Then, she took some 
toilet paper and dabbed at her pussy, stood up, threw 
the paper into the bowl and flushed the toilet.

I had found the whole experience of watching her do 
this, a bit of a turn on, strangely!

As mom washed her hands in the washbasin, I had a semi 
hard on after what I had just witnessed. Mom looked over 
at me and saw it.

"Did that happen whilst you looked at me on the toilet?" 
she said.

"Yes," I replied. "Seeing you take a pee was quite 
arousing, for some reason," I added.

"That's not uncommon," mom said. Then, pausing a moment 
longer, she finally said, "Come over here, I'd like to 
try something before we shower."

Mom went back to the toilet and sat down again on it. 
She beckoned me to her.

I got out of the bath and went over to her and stood in 
front of her as she sat on the toilet. My dick was still 
semi hard, and seeing her sitting on the toilet seat 
like that was contributing to its state.

Then she started sucking my dick again, as she sat 
there. My prick responded almost immediately to this, 
hardening up again. I grabbed mom's head and fucked her 
mouth as she sat on the toilet.

"Fuck, yea mom," I said. "This is so good."

She paused sucking my dick and licked my balls for a 
moment. Then she stroked my hard on with her hand.

"Ok, that's enough. I just wanted to see if you would 
get hard quickly this way. Next time I want to go to the 
toilet for a pee, come in with me. I'd like to suck you 
whilst I do it. That should be a good way of helping you 
to cum, from your reaction just now."

Fuck, the thought of that was so thrilling and arousing 
that my dick jerked up again toward her face.

Mom got up and said, "Get in the bath again. I'm just 
going to get the semen beaker from the bedroom."

I did as instructed and waited for mom to return. My 
dick had become slightly limp again as I waited

She came back into the bathroom a moment later, holding 
the semen beaker. Then she clambered into the bath, her 
tits flapping sexily as she did so, and put the beaker 
on one of the glass shelves over the far end of the 
bath.

Then she said to me, "Turn the water on and let's soap 
up together."

I turned the shower on and the spray went over me. I 
adjusted my position slightly so that mom could get 
under the showerhead too. Her boobs touched my chest as 
we did this. My dick was starting to respond again.

Mom grabbed the shower gel and started lathering me up 
from the front, over my chest, stomach, and then running 
her hands over my dick, which became semi hard as she 
did this. She cupped my balls and soaped them, and then 
knelt down so her face was level with my dick and 
started to lather up my legs. Then, she stood up again, 
and said, "Turn around."

I turned to face the tiled walls at the shower end of 
the bath, and felt mom lather up my back and shoulders. 
Then she moved onto my ass and cupped each butt cheek as 
she rubbed the shower gel into it. "I'm going to do your 
ass crack now," she said.

I braced myself, and felt her run her fingers and hands 
along my butt crack, over my asshole and towards my 
balls. It tickled a bit as she did so and I 
instinctively jerked forward a little, still not used to 
someone else's hand running over my sensitive parts like 
that.

Finally mom stopped soaping me, and said, "Now do me."

I turned around and faced her. She raised her arms, as 
if offering her body to me. I started under her armpits, 
and then did her arms, which she then let fall back down 
to her sides. Then, I started lathering up the area just 
below her neck and then moved onto the large globes of 
her tits, squeezing and cupping each one almost 
greedily, as I did so, enjoying the feel of them with 
each movement of my hands.

My dick was getting harder, at this point.

Then, I knelt down in front of her and soaped up her 
stomach and then her pubic area, letting my fingers 
slide between her legs, over her pussy mound, towards 
her asshole from the front. God, that felt good!

Then, I did her legs, in swirling motions, making sure 
the back of her thighs and calves were also well 
lathered up.

Mom then turned around whilst I was still kneeling down, 
so that the glorious curved arches of her buttocks faced 
me directly. I squeezed some more shower gel onto my 
hands, and then started kneading and squeezing her 
fleshy, thick, white butt cheeks. God, I was loving 
this. 

I stood up, still caressing mom's butt, and then let my 
hand slide along her butt crack, over her asshole, 
towards her pussy. Mom pushed herself back towards me as 
I did so, almost like she was enjoying the sensation of 
my fingers and hand running along her ass crack.

Then, I moved my hands up to her back and shoulders and 
lathered the soap in there, well.

My dick was now slightly more than semi hard, but not 
quite a full pole yet.

Mom turned around and said, "I have an idea."

"What?" I said.

"As we are now both soaped up, let's hug and rub our 
bodies together so that the soap gets rubbed in even 
more as we rub ourselves against each other.

Fuck, the idea sounded hot!

Mom made the first move my moving a bit closer to me and 
then putting her arms around my back like she was 
embracing me in a hug. 

I did the same to her, and for a moment as we hugged, it 
just felt like a loving embrace rather than anything 
sexual. But then, as I felt my hard on rub up against 
her stomach, above her pubes, the sexual feelings 
returned.

Mom started sexily rubbing her boobs and other parts of 
her body against me and running her hands along my back 
and down over my butt.

I decided to do the same to her as we rubbed up against 
each other, but I ended up concentrating more on 
squeezing her wonderful large ass cheeks as we embraced.

My dick started to get even harder at what we were 
doing.

Mom noticed this and said, "I see you're really hard 
now, and your cock is starting to get in the way. If you 
promise not to cum inside me, I'll let you put it in me 
again."

I made the promise, not believing my luck that mom would 
agree to this so soon!

Then she grabbed my slippery soaped up dick and said, 
"Turn the shower on and let me rinse off some of this 
soap first."

I switched the water on and we both rinsed under the 
spray together, mom, paying special attention to my 
dick.

Then, after we had rinsed pretty much all the soap off 
our bodies, I turned the water off, and faced mom again.

She knelt down and took my cock into her mouth. The 
feeling of her sucking me was wonderful and she soon had 
me very hard.

Then, she turned around and moved a step towards the far 
end of the bath, and bent forward so she was supporting 
herself with her hands against the end tiled wall, as 
she presented her ass to me.

"You can fuck me like this," she said firmly. "And I 
want you to talk crudely to me whilst you do it. But 
remember, don't cum inside me. You must tell me when you 
are about to cum, so I can get the semen beaker into 
position."

"Ok, mom " I said. "But first I'd like to lick you down 
below."

I knelt down behind her, parted her buttocks with my 
hands and started lapping at her pussy. She tasted 
wonderful, and smelled clean and fresh after the wash. I 
squeezed her butt cheeks as I licked her. Then, I moved 
onto her asshole momentarily, giving that a good 
tonguing.

By now my hard on was raging.

I stood up again and still holding her butt cheeks open 
a little way with my free hand, I braced myself to do 
what I had longed to so much, and for so long -- ram 
into her pussy, hard, from behind, whilst we were in the 
bath together.

Mom's pussy looked so inviting, I positioned myself as 
correctly as I could, in my inexperience of doing such 
things, and then pointing my cock head between her open 
cunt lips, I pushed in.

"Ahhhh," mom gasped, as I did so.

"Oh, yes," I cried out.

I pushed all the way in, and then back a little, as we 
adjusted ourselves for our respective movements

Then, I shoved in again, and then out again, a little 
faster this time.

"Fuck, yes," said mom, to my surprise.

I increased the pace and depth of my thrusts until I was 
slapping up against mom's meaty ass cheeks each time I 
went forward and fully in. 

"Fuck, mom that's so good," I said.

I moved my hands up from holding her hips, so that I 
could squeeze her boobs as I fucked her.

Man this felt amazing!

I moved my hands down to her hips again and carried on 
slapping hard into mom.

"Yes, Jacob, tell me how much you like fucking me," she 
said teasingly.

"Fuck yea mom, I love fucking you like this. Your cunt 
is so fucking hot, I just want to fuck you all the time 
now," I said, all my inhibitions vanishing for a moment 
as we fucked.

We were now moaning and groaning like wild animals.

Soon, as we were both so lost in the throes of our 
mutual enjoyment, all of a sudden I felt the cum rise in 
my balls.

I remembered what mom said about not cumming inside her, 
but this felt so good, I just didn't want to stop. But 
something in my mind told me I should warn her, so I 
said, "Mom, I'm going to cum."

Mom was groaning deeply in time to my thrusts as I 
fucked her, and she just managed to blurt out. "No, fuck 
that. Cum inside me, cum inside mommy. I want to feel 
your spunk inside me again."

That was it. Her words of encouragement only spurred me 
on further, and after just a few more thrusts, I came 
deep, thick and heavily inside her, making a noise 
almost like a donkey braying as I did so! 

Mom screamed out as I spunked deep inside her, 
indicating she had orgasmed too.

I held onto her hips as her pussy walls milked my prick 
of cum. I could feel them pulsating against my dick and 
it felt wonderful. This was all still very new to me, 
but it had all felt so instinctive, which it obviously 
was!

After a while, as my dick became limp, and finally fell 
out from inside her, I still held mom around the waist 
supporting her whilst she leaned on the wall still 
facing away from me, her eyes closed, and her face 
resting on her hands.

"Jacob, that felt so good," she said finally. "I don't 
feel I care about measuring your cum anymore, but I know 
we have to," she added.

After a moment, she turned around, and without looking 
at me, put her arms around me, as we stood naked in the 
bath together, and held me close to her, hugging me 
tightly.

To be continued?

Archivist's Note: This author did not provide an email 
address so it will do the reader no good contacting the 
archive staff for further parts. Check back at a later 
time to see if there have been any updates to this story 
by the author.

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The author does not condone child abuse, this story is 
meant as an erotic fantasy not depicting anything in 
real life. Anyone acting out such scenarios in "real 
life" can look forward to many unproductive years 
getting it up the butt by a fellow convict in their 
local prison system.
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Kristen's collection - Directory 81