"Right then Amy darling, let's get Mr Jones strapped in more snuggly. We don't want any unhelpful wriggling do we now?"

Amy quickly follows orders and begins tightening the heavy leather straps so that, now, there is absolutely no room for any kind of movement.

"You are such a good patient" Amy purrs huskily, stroking your back and then running her fingers lightly down the cleft of your bottom in a way that immediately makes your skin react and turn to goose bumps. She giggles when she notices your goose bumps and turns to me

"Ooh, bless him, he has goose bumps nurse. I love the anatomical name of the muscle that causes goose bumps 'The Arrector pili' it sounds so kinky don't you think?"

I nod in agreement. "Very true Amy but not more kinky than a proctology nurse, isn't that right Mr Jones?"

You don't know what to say to that so, reasoning that it might not be a good idea to label the two nurses 'kinky' when they have two very big needles destined for your anal sphincter, you choose to remain silent instead.

"Speculum please Amy, just wide enough to fit the Pennington forceps through... Try to relax Mr Jones, this is going to sting and burn a lot... Breath through it"

I pick up an alcohol soaked cotton wool ball with the Pennington forceps and swap the inside of your anus and your reaction is instant; I hear you sucking in your breath sharply followed by a long drawn out moan.

"Well done Mr Jones, that's almost the worst bit over with. Amy... Watch closely. You will be doing the second one."

I spend a few seconds palpating the inside of your anus between the speculum blades, carefully locating the correct spot for injection and then get Amy to have a feel too. " You're looking for the area just below the band of tough muscle, have a good grip on the syringe and insert the needle quickly, firmly and as smoothly as possible. Ok deep breaths Mr Jones.. one, two...."

Three. You give a loud strangled cry as I jab the needle in and the pain grips your body. I hold the syringe steady. The needle is buried almost three quarters of an inch deep in your muscle. You tense and unconsciously try to fight your restraints in reaction to the pain. As soon as you stop fighting and start to relax slightly, I swiftly aspirate and, with steady hands, slowly begin to push the plunger, injecting the botulinum toxin directly into your muscle.

The serum burns as it enters your body but it leaves a pleasurable warmth when the pain begins to subside. I see your penis begin to swell again and I know you are just as aroused by the shot as you were the preceding treatment. The rush of giving such a painful and precise injection and the control I have had on you has aroused me too and I feel my nipples harden and dampness seep into my knickers.

"Ok, just relax again Mr Jones...."

Amy follows my lead perfectly and after palpating your tender anus, she swiftly locates the correct spot in the less dense part of your anal muscle. We count upwards together, preparing you for the injection. Now, all of us know how much this is going to hurt and the room takes on an erie silence and expectant tenseness.

" One, two..... THREE. " She jabs the needle firmly into your muscle and as the pain penetrates your mind, a silent scream becomes jammed in your throat. Even your vocal chords are too shocked to make any noise this time.

Tears stream down your face and you bury your head in the pillow, gripping the padded cover on the couch with white knuckles until finally, the pain begins to subside enough that your voice is able to react and you can hiss out a swear word into the pillow. Amy aspirates and then injects the toxin into your muscle before removing the needle and discarding it into the sharps box.

As you slump into the treatment couch, my hand reaches down between your legs and my delicate fingers curl around your penis. My palm grips your swollen length, moving the skin back and forth in firm determined strokes, my rhythm building in intensity in time to your arousal fueled respiration.

"Don't hold back Mr Jones.... You deserve this" I say breathlessly, slipping my own hand into my knickers to take care of myself.

"I will.. See. You in. Clinic in... Eight weeks." I tell you, my breathing thick and impeded as I near my own climax. Amy releases you from the restraints and helps you to dress.

I smile to myself as I watch you hobble out of the door. Like most of my patients, there will be a return appointment, I'm sure of it.