...I feel a rush of pleasure!

"Oh...somethings.....happen....ing!!" I manage to garble out.

"Yes, I can feel it's gotten harder in my hand."

"Please...don't....stop!!"

"Don't worry, I won't." She says reassuringly as she continues stroking my penis. "I'm going to keep going until you feel completely fine." I don't say anything as my face screws up and my toes curl up on themselves. "Did you hear what I sa....?".

Before she can finish a loud "ARRGGHH!!!" Escapes from my mouth and that's not all that escapes from my body! My penis gives it's largest spasm yet, shuddering between Sister Mary's fingers, as my pleasure peaks and a large spurt of liquid erupts out from its tip! As it does Sister Mary gives a small squeak, closing her eyes as the white globules fly towards her face.

Her hand stops moving back and forth along my groin but it continues to uncontrollably fire off more of the unfamiliar white liquid which splashes against her hair and skin. She manages to angle it away slightly causing the next few explosive sprays to shoot over her shoulder and onto the desk. I have no brainpower to devote to contemplate what on earth is happening, all I can do is enjoy the ride as pleasure shudders through my body accompanied with more flying fluid. This continues for a few more seconds, the room silent except for the wet splashing sounds of liquid landing on the wood of the desk and my own heavy breathing as I writhe in my chair. Finally my genitals stop firing jets of fluid onto the desk, although it continues to throb for a little while longer a few final dregs running down over Sister Mary's hand. Realising whatever just happened has concluded she opens her eyes and looks at my still hard penis.

"What was that?" She asks as liquid drips down her cheek and onto her habit.

"No idea..." I reply breathlessly, waves of satisfaction and exhaustion flooding my body in equal measure. "That has never happened before." She still looks a little taken aback, her face framed by the sticky white fluid as she lets go of my softening member.

"Well, never mind that now, how do you feel?" She asks.

"I....I feel great."

"No more discomfort?"

"None." I reply as my penis returns to its normal size and shape. "I can think straight for the first time in ages!". I smile gratefully at her and receive a small smile in return.

"That's good to hear. These seem less heavy too." She says cupping my balls again before looking towards her highly splattered desk. "What is this stuff?"

"I don't know. But I guess it was in my testicles before whatever just happened happened." I reply leaning forward to get a better look at her desktop.

"Hmm, perhaps it’s what was causing your discomfort." She says as she wipes some from her face onto her palm before bringing it to her nose for a sniff. "It certainly has a very strong smell, although not an unpleasant one." As she does this I feel a strange sense of delight at the sight of her sniffing this strange fluid that I just produced but also at how it looks dripping down her hair and skin. She looks down at her habit, where more of the sticky liquid has fallen onto the swell of her chest. "It's very thick isn't it.....sticky too." She comments this whilst using the hand not currently cupping a puddle of fluid to attempt wiping the substance off. Watching her pressing her palm against her chest causes me to have another pleasant sensation deep in my being. Sister Mary continues to try and remove the stubbornly clinging splashes, her hand sinking into her large chest as she wipes with gradually more and more **** in an effort to clean her habit. Feeling a familiar stirring at my waist as I watch this I hastily pull up my trousers and look away from Sister Mary. She lets out a small "Hmpf" as she admits defeat. "I will just have to get this cleaned up properly later."

"I'm very sorry." I say looking back at her.

"Don't be, we both had no idea that would happen." She says flashing me that kind smile once again as she gets to her feet, her chest level with my eyes. "Now how about you get back to your studies, hopefully you should be able to focus again."

"Yes." I say getting out of the chair. "Thank you again."

"You're welcome, may I suggest we pencil in a followup next week to check how you're getting on?"

"Thank you, that sounds like a good idea." I say part of my mind thankful for her willingness to check on me and another part hoping that she will be massaging me again. I try to ignore this part as I say my goodbyes and head towards the door. As I am about to leave I turn back for one last glance at Sister Mary. I see her examining the fluid very closely, giving it another few sniffs and letting out a small possibly happy gasp? Before she sees me looking I exit through the door and head back to my own room.