Brenda had done very little all week-end, so she was slightly bored with life and ready for anything as she checked in at the Pelvic Clinic that Monday afternoon for the first of the course of treatments that had been prescribed for her by Dr. Paul Lavoisier.

Brenda was a bit fed up too. Who likes to find they have a birth defect that needs correcting? Even if the "defect" is an under-developed rectum so tight and narrow that it excites any normally developed man to ejaculate on only the first or second thrust, totally unable to control himself - he is so hotly gripped by her stretched love channel as he slowly inches his rampant penis up into her lovely bottom?!

Monday, Wednesday and Friday afternoons for the next several weeks were going to stretch her patience as well as her rectum, she thought to herself as she checked in with the receptionist of the Pelvic Clinic, then sat while the young woman made a call.

Brenda didn't have long to wait, though, and a nurse was beckoning her to come.

She followed the attractive thirty-year-old blonde, along a rabbit-warren of passages until she opened a door and motioned for Brenda to enter a small room that looked at first glance like an ordinary doctor's examination cubicle.

"I'm Nurse Whackit, Brenda. I am glad to see you are here punctually."

"Please go into that dressing room and remove all your clothing. Fold it neatly then put on this hospital gown, so the opening is down the back."

"I will start preparing here for your first procedure. Be a quick as you can we have a lot to do."

I felt intimidated, but opened my mouth to ask about my shoes . . .

"No questions, Brenda: just go and do what I've told you!"

Whackit was one of those old-fashioned bullying nurses! I was cowed (and ashamed of myself for it!) and went quickly through into the dressing room.

I took off my coat and everything else, folded them all neatly. I didn't dare do anything else - put them on the chair, and slipped into the gown . . . the usual hospital-gown.

Even after I'd tied the tapes as tight as I could, I could still feel a two-inch gap at the back, at my bottom.

I needn't have bothered, though; as soon as I got back into the other room, Nurse Whackit said: "I thought you'd gone to sleep in there. Gown off, please, and up on the examination table, on your stomach."

"Now, Brenda, you must understand that everything I do has been ordered by Dr. Lavosier, and I follow his instructions precisely."

"If you find anything is too painful or distressing, you have only to tell me. I will stop immediately, and you will put your clothes back on straight away, and leave. Your treatments will stop of course, and you will not return again to the Pelvic Clinic."

But I'm sure you will have no difficulty undergoing the procedures. In fact you will find some of them are very pleasant. Most of my patients seem to like them very much."

"Do you understand what I have just said, Brenda? Do you have any questions?"

"Yes, I understand . . . No questions, nurse, thank you."

"Good. First thing I am going to do is give you colonic irrigation. This will wash out your insides and make you nice and clean for the procedures that follow."

"It is like an enema but different. With an irrigation, we have lots of warm water gushing in and out of you, many times."

"It is a popular procedure with fashionable young ladies: it helps them develop those beautifully clear and translucent complexions."

I could tell: this nurse loved her work.

"Now turn onto your left side, and pull you right knee up a little. A bit more . . . yes, that's good."

"The irrigation tube is probably larger than anything that's been slid up into your bottom before; it has to be, so your feces will wash out through it."

"The tube will go in easily after I've made your bottom ready."

SLAP ! and she spanked me hard on my butt, SLAP! SLAP! SLAP! SLAP! SLAP! SLAP! SLAP!

"Oooooh! Oooooww! Aaaagh! Ooooo!" I yelled at the top of my lungs. "Eeeeeeh! Oooooh! Oooooww …"

"The rooms here are completely soundproof. So don't worry, Brenda. Make all the noise you want. And I'm sure you've had bare-bottom spankings before."

Tell the truth, I was yelling more out of surprise than pain.

With my right leg pulled up a bit, Nurse Whackit was spanking me right in the middle, up between my cheeks. And the way she was doing it was more like Slap! Thump! Slap! Thump! Thump! Slap! Thump! Thump! Slap! . . . as she seemed first to slap me on the cheeks, then THUMP me with the heel of her palm, right up under the middle of my bottom.

Those "Thumps" were like a pile-driver and each time the shock went right up through my insides. I'd seen photos of a girl being spanked, her butt seemed to be completely flattened and a shock wave rippled across her cheeks.

Well, these thumps felt just like that, except the shock wave was travelling right up inside my bottom. I felt my cheeks bounce and quiver at every thump.

The "Slaps" were starting to make my cheeks burn.

I was wildly excited in spite of the pain and I could feel myself getting very wet down there. I was starting to writhe with the erotic agony.

Nurse Whackit said: "How can I spank you in the right place when you squirm about like that? Just hold still and stop wriggling around."

A minute later she stopped spanking me; I felt something round and smooth push hard against my opening, but only for a moment, then it popped inside and slid on up into me.

"There, you hardly felt that go in, did you ?"

And Nurse Whackit moved the warm smooth thing around inside my bottom gently from side to side and in and out.

My bottom was stinging a lot, but this feeling was heavenly. She might be bossy, but this nurse really knew what she was doing. I was shuddering and moaning in delight.

"Now, Brenda, I will explain what I am doing as we go along, so you understand what is happening to you. We don't want the sensations to take you be surprise, do we ?"

"There's a doughnut shaped bulb around the top of the tube that's inside your bottom We pump it up . . . and now the tube can not possibly come out of you again .Not until we collapse the bulb later.

"Now, I open the tap under the glass tank up above you, and warm water starts to flow dooooown into your bottom."

"I shut that tap, and open the tap on the wide rubber tube here, so the water runs out of your bottom again and down to the drain. I let warm water run into your bottom again, a bit longer this time . . . Then out again . . ."

My tummy was soon starting to bulge every time the Nurse Whackit let the water gush into my bottom. The warm pressure inside me was getting me wet and excited every time Nurse Whackit filled me.

"That's more than half a gallon in you now and both taps are closed."

"I could take away both hoses and leave you free so you could get up off the table and walk slowly like that with me to the cafeteria and back with all that water locked inside you."

"People might think you were pregnant with your bulging tummy. They would never guess you were almost bursting with about six pounds of warm water locked up inside your bottom and you had vaginal juices running down your legs with your erotic excitement as you walk along beside me to the cafeteria for a quick coffee."

My eyes must have been goggling with terror. It was quite true that she could make me do what she said, there was no way I could stop her and the exciting torture of walking while dilated to bursting with hot water would have me collapsing at the knees with an orgasm long before we reached the cafeteria. I would likely swoon away in ecstasy on the floor.

"Another time perhaps. This is your first treatment here. What I am going to do now is massage your tummy. That helps the warm water to move further up into you."

Nurse Whackit turned me over onto my back then began to gently press with her hands flat on my bulging tummy and push the water even further up inside me.

I felt completely helpless and under Nurse Whackit's control as she gave me a sensual and erotic massage with the warm water imprisoned in my bulging belly.

"Right! Turn back on your side! Left leg up a bit more.Now I am opening the tap so the water runs out of you again."

And the relief was heavenly as the pressure went from my tummy. The gurgling and expelling went on for several minutes.

"Now one more filling, and I will see how it is coming out. Just as I expected it's running completely clear now, fit for a king to drink."

"That's enough for today. The water has nearly stopped draining out of you."

"I am deflating the doughnut bulb on the end of the tube that's up inside you - so I can pull it out."

"Now get up off the table slooowly and sit on the toilet in that closet. We'll spend a few minutes letting the water drain back out."

As I moved from the table Nurse Whackit slapped my bottom, hard.

"You are nicely shaped, Brenda, aren't you ? We don't often see such attractive girls here."

"Thank you, Nurse, nice of you to say so." And I wiggled my hips, just a little, as I walked to the toilet.

I heard quick steps behind me and she delivered a second resounding slap up under my bottom that nearly lifted me off the floor.

"There's no call to walk like a tart, Miss."

As I sat there I caught her eye and returned her pleasant smile.

"Right! Stand up now and face the wall. Take a firm grip of the towel rail in front of you. I'll just dry your back with this towel. Now I'm going to massage your tummy to get the last drops of water down and out of your bottom. I don't want any of it on my lab coat, so I will keep that open while I support your back to stop you falling over."

Nurse Whackit stood behind me and brought her hands round to press on my tummy and she rubbed them slowly up and down massaging me while she pressed herself firmly against my back, ‘So I wouldn't fall over.'

I could tell she was bare with had no bra or panties on. I felt the exciting warmth and pressure of her naked body from my shoulders and down along the length of my back as she rubbed her clit from side to side pressing hard against my bottom while she started to kiss my neck and shoulders.

It reminded me of stories of "frottage" on the Paris subway, which I had felt too on busses in the Chicago rush-hour.

Tight-packed passengers standing in swaying trains and busses need no excuse for rubbing and bumping against a firm well-rounded bottom ! And some of the bottoms rub and bump right back again.

I got very wet between my legs again as her fingers massaged around my clit and she pressed and rubbed herself against my cheeks. I felt the excitement rising inside me more and more until I yelled and shuddered with her as she brought us both expertly to erupt together in surging orgasm. I was shaking like a leaf! Nurse Whackit steadied me and held me close until we became calmer and recovered ourselves a bit.

She turned me round and kissed me deeply in my mouth with her tongue probing, exploring excitingly as she held with her hands cupping my bottom and pulling me up to her in a tight embrace.

Then she sat me down again on the toilet seat, saying, "Finish draining that last little bit, my dear!" And Nurse Wackit returned back again to her own brisk self.

"Right! Now stand up, Brenda, and bend over so I can dry you," and she dabbed my with cotton wool, then said, "Gown on, and do up the ties! Now we will walk a short distance down the passage to Dr. Lavoisier, who will be waiting for you."

She saw me struggling to make the gown meet across my bottom, but just gave a short laugh: No one is going to pay the slightest attention to the little bit they can see of your bottom, my dear.

She opened the door and gave me a hard slap on my bottom that propelled me out into the corridor, on my way to goodness knows what.

to be continued.