Hermione breathed through her mouth, trying to calm herself from her orgasm. She could feel his hardness, and she was sitting right on top of him. She knew she wanted to make him come, but before that, she needed to breathe.

She turned to him, squinting into the darkness at his eyes.

A small smile on her lips, she rubbed down on his crotch. He had just been holding her, apparently content, but he groaned, and his fingers clenched around her hip.

She teased him, squirming on his lap, and felt him become harder, and she was surprised it was even possible.

Suddenly he gave a growl, and she was on her back, and he was on top of her. He straddled her, and ground his crotch into her bare center. She was already wet around the thighs from her recent orgasm, and sensitive. The material of his robes brushed her folds, and moaned wantonly, responding to the coarse seam of his pants rubbing against her.

He pulled her forcefully onto his chest, and felt her face. He found his hands on her neck, and he pulled her lips harshly to his, all the while grinding upward into her.

Finally, Hermione delved her hand into the waistband of his trousers, and undid the buttons. She was pulling his robes down his legs, when there was a sound outside the classroom door.

Harry's eyes widened, and he sat up quickly. He cursed, tried to pull up his pants, which were now pooled around his knees.

He heard McGonagall step into the classroom, and walk past the closet to the front of the class.

He heard a light breath in his ear, and knew the girl was right there. She was trailing a slight finger on his bare thigh, and he hurriedly pulled his pants up again, trying to button them.

McGonagall seemed to be writing a letter, as he could hear the scratching of a quill.

Suddenly he realised that the girl had pulled his pants down again. He couldn't speak, so instead he frowned at the air in front of him.

Hermione could have laughed. Thinking she could have some fun, she put her hand bravely on his crotch. She cupped him, balls and all, and Harry's frown slipped off his face at once.

He was pressing his lips together, trying not to make a noise.

Harry felt a mixture of horror and arousal as he felt invisible fingers on the waistband of his boxers. She slipped it off and over his throbbing length, and even the brush of the fabric made him want to groan.

He was so aroused from having fingered her till she came, dripping around his fingers. Then having her pressed against him, had made him so want to fuck her hard and rough.

She ran a finger down his length, he shivered, his head falling back in pure pleasure. Well, not really pure, since his teacher was five feet away.

She put both hands around his member, holding him gently, as if she was weighing him. And then she stroked him, gripping him firmly.

Unable to stop himself, a low groan slipped from his mouth. Her touch seemed to relieve some of his tension, and yet double it.

"Potter?" he heard a voice.

His eyes snapped open in horror. The hands on his member froze, but didn't withdraw.

But the closet door was still shut. He knew he had heard McGonagall say something, though.

Then he heard McGonagall's voice again. "Potter, what is the name of Bill Weasley's cottage, again?"

Harry couldn't believe it. McGonagall was making conversation. In detention. Well, that wasn't weird. Not really.

But it was definitely unusual when the mystery girl stroked him again. She had realised the same thing that Harry had, that McGonagall was talking.

The girl pumped him steadily. Soon her hands were moving up and down, harder and faster, and he was clutching her hip like a madman, sure that it would leave bruises.

He knew, somewhere in the back of his mind, that McGonagall was waiting for an answer.

"Harry?" she called again.

Harry groaned. He called out, "Shell Cottage, Professor. I couldn't r-remember for a minute there," and he actually moaned loudly at the end, as the girl gave the tip of his penis a squeeze, pinching him between her fingers.

McGonagall said, "Thank you, Harry."

There was moment of silence, and Hermione pumped his length steadily. It had less that ten seconds since they had begun, when McGonagall said, "You realise, Potter, that I had to give you detention..."

Hermione had slid back the tip of his flesh, and was running her thumb over it, apparently curious. She ran the pad of her thumb over his flesh firmly, and he arched off the floor into her hand. Nobody had ever touched him like this. Atleast not until last month.

Trying to remember what McGonagall had said last, and cursing himself for the torture, he managed to reply, "You did?"

He added "Professor?" as an afterthought, and almost died when he felt something moist and soft touch the tip of his length.

She was still sitting on his knee, so- had she licked him?

"Yes, well, I've never been accused of partiality, Potter, nor will I ever be," McGonagall was saying.

But then, Harry knew that this girl was fond of licking, after the Quidditch locker room incident the other day. Merlin knew he had dreamed about it and wanked to that memory every night. About those sweet lips, wrapped around his cock, sucking him clean of all his come.

And now here he was. Would she take him in his mouth?

He replied to Minerva, "Yes, Professor," and he definitely felt the girl this time, her lips around his length, taking as little of the tip into her mouth as she could. He was just touching her lips.

In a flash Harry realised what she was doing.

"How's the closet looking?" Minerva's voice said.

Harry took a deep breath. Hermione's (though he didn't know it was her) hand was still around him, though her lips weren't.

But now he knew what he had to do.

"Well, Professor, it's quite dusty."

He was rewarded. At the word 'Professor', her lips were back around his length. She was breathing lightly on him, and he could feel his length throbbing with his heart, in anticipation of her tongue.

"But it'll take me hours to clean it, Professor McGonagall."

Now Hermione had taken him a little more into her mouth, but not by much.

He groaned in sheer frustration.

Merlin, this was unfair! How many times can a guy say 'professor' when he's being wanked in a closet?

She chuckled lightly at his voicing of his frustration, and the trembling of her lips almost made him finish.

But he didn't. He had to hold out long enough for her to take him into her mouth. But to do that he had to make conversation with McGonagall.

He was now just touching the teeth in the fucking tease's mouth, and he felt scorching hot, all over his body, imagining how it would look, if she had been visible. His penis, resting on her lips, and the serrations on her teeth, running over his tip.

"Then you'll be here hours, Potter."

There was a finality to McGonagall's voice, that suggested their brief 'conversation' was over.

Gritting his teeth I what he realised as crushing disappointment, he managed to spit out, "Yes, Professor."

Seeming to know what he was thinking, Hermione gave his length one kiss, her tongue licking lightly on the end. He felt a sense of loss as her lips left him, but were immediately replaced by her hands.

She pumped him hard and fast, and suddenly she ran her index finger over the ridged vein on the underside of his flesh, and cupped his balls, pressing them softly.

He had already been on the brink of orgasm, and the feel of her soft fingers on his balls undid him. He came convulsively around her fingers, groaning, sounding very loud in the enclosed closet.

She climbed off him, and he felt a kiss on his earlobe. Then the closet door swung open, and he was too tired to even scramble up, and didn't care if McGonagall caught sight of his penis hanging out.

He rolled over on his back, breathing harshly. And he marvelled once again, at how the invisible girl did the most atrocious things, but somehow, in the end, she never failed to make him come.


Review!

I know you all didn't quite get what you were looking for(insert sly wink here), so:

If I get ten reviews for this chapter I promise I'll update on Sunday night.

How do you want Harry to get his blowjob? Leave me some ideas. I'm looking for something to top mine.