Ok – this is the second chapter and it contains SLASH! Prrrr…

"Go on then, what would you do?"

"Pardon, Mr Potter?"

"What would you do…sir?"

"Come here. I'll show you."

Harry's eyes widened and he wondered how he was ever supposed to advance the six or so metres between him and Snape on these legs, which were shaking like jelly. Somehow, however, he managed it, and was soon standing on the other side of Snape's desk, looking across it at his Professor, whose penetrating gaze had followed him steadily across the room.

"How did you know which two ingredients to add this afternoon, Mr Potter? I refuse to believe it was just dumb luck…or even skill."

Transfixed, Harry pulled out the parchment from his pocket and placed it on Snape's desk - his Professor continued to stare at him, then gradually lowered his gaze, curled his lip slightly and reached out lazily and picked up the parchment.

"Where did you get this?"

"I found it on my pillow. I was sort of hoping you'd put it there."

"No indeed."

"Oh. Are you sure? You didn't want me to stay behind after class?"

"It is, however, written in Miss Granger's handwriting. Didn't you notice?" Snape sneered pityingly. Harry shook his head, looking ashamed - he never usually read anything Hermione had written, unless he was busy copying it. Snape, on the other hand, had Hermione's constant stream of extremely lengthy essays to mark…

"Nevertheless, Mr Potter, you should have handed it in to me at the beginning of the lesson. I could, therefore, have had a chance to change the potion so as not to give you an unfair advantage. As it is, you have as good as been caught cheating in class. Needless to say, you no longer merit the reward I was going to give you."

Harry tried not to look devastated but obviously failed, for Snape suddenly reached out one hand and gently stroked Harry's cheek with his fingers. His face wore an expression of sarcastic concern.

"Poor, poor little boy…here, I have something that may cheer you up."

And he leant over and gently brushed his lips against Harry's. Harry's eyes went wide as saucers and he gasped and leant in for more, but Snape had already sat back in his chair.

"Go on - off to the library with you."

Harry tried to stand up. He gathered his stuff and walked miserably towards the door. At the last second he turned back: "What would you have given me if I hadn't cheated?"

Snape raised one eyebrow and smiled. "You'll never know now, will you. As it is, the best you can hope for now is punishment for your cheating."

Realising he had little to lose now and hoping desperately, Harry returned Snape's gaze and said, very deliberately:

"I want to do down on you."

He winked. Snape's eyes widened slightly, but his face remained perfectly composed.

"You have no subtlety, Mr Potter. Declarations like that do not exactly turn me on."

Harry put down his bag and sighed. He was doing this all wrong.

"Then what does turn you on?"

"When you've done something that works, you'll know, trust me."

Harry was turning back to the door when he froze - and turned around again. Was that an invitation? He looked at Snape carefully. Snape returned his look with quiet amusement.

"Mr Potter? Where are you going?"

What? Has he suddenly changed his mind -didn't he just tell me to go away? How am I supposed to know what to do - I can barely stand! Harry looked about wildly, clueless.

"I don't know! I don't know what you want! Why don't you just help yourself? Do whatever you want, I don't care…I…I want to be punished, or rewarded, whatever either may involve - anything is better than the nothing I have to endure at the moment..." He faltered and trailed off altogether at the amoral smirk which was spreading itself across his Potions Master's features. The black eyes were gleaming wickedly.

"Well then...lock the door and come here."

Harry nodded in silence, locked the door and approached the desk. A row of chocolates appeared before him. Harry wrinkled his nose.

"This is my punishment? Well, I don't actually like dark chocolate. It makes me feel sick, so that makes sens-."

"Then you have no taste, Mr Potter. And that is irrelevant anyway, because I want to watch you eat every last one of them."

Harry paused, slightly disconcerted.

"Why?"

"I shall be paying particular attention to the way you use your tongue, Mr Potter."

"Oh." Harry grinned and nodded in comprehension.

"Put down hands on the desk, palms down, and pick them up with your mouth."

Harry did as he was told; he had to bend over the desk to get his face close to the chocolate. It smelled so piercingly bitter that he shuddered.

"Problem?"

"No, sir." Harry mumbled and lowered his mouth onto the chocolate at the end of the row, picking it up in his mouth and chewing it. He grimaced as caramel exploded over his tongue and forced himself to swallow. The taste was disgusting. He looked up. Snape was watching him contemptuously.

"Boring. You can do better than that."

Harry lowered his face more cautiously this time, and gently bit the top off the next chocolate in the line. The chocolate crumbled and pale golden caramel oozed out onto the tray. Harry's tongue snaked out and nimbly licked the caramel out of the broken shell - as he raised his head, there was a trail of viscous yellow sweetness connecting his mouth with the desk, and his lips were syrupy-sticky. He glanced at Snape - to find his Professor gazing at him, enchanted. Harry licked the caramel slowly from his lips, trying to look sensual and not to shudder at the taste -

"Better?"

Snape made no reply.

"Would you like one?"

Harry gently pushed a chocolate across the table with his nose. Snape reached out one hand, in some kind of daze, and picked up the chocolate and brought it to his lips. As he bit into it, caramel trickled out onto his fingers and he paused. Harry instantly left his place on the other side of the desk and proceeded to wrap his mouth around those fingers. He opened his eyes and moaned: Snape was giving him the dirtiest look he had ever seen.

"Get down on your knees."

Harry obediently knelt on the floor so that he was, once again, kneeling in between Snape's legs. Snape lowered his hand graciously so that Harry could continue sucking his fingers. Harry ran his tongue over them.

"You're a brazen little slut, aren't you… I had no idea the famous Harry Potter was this lustful."

"I'm glad I can still surprise you, sir." Harry closed his eyes and continued blissfully sucking the fingers - Snape suddenly pushed them deep into Harry's throat and Harry almost choked.

"Not used to doing this, though, are you."

Harry shook his head around Snape's fingers.

"What you lack in experience you make up for in enthusiasm, I suppose?"

Harry nodded eagerly. Snape slid his fingers in and out of Harry's mouth and Harry snatched at them impatiently.

Then, abruptly, the fingers disappeared. Harry's mouth felt empty; his brain had turned to mush and all he could think about was - he lowered his head and pressed his face hotly and boldly in between Snape's legs and rubbed his cheek roughly against the black material of his Professor's trousers. He felt the muscles tense beneath the fabric; and found what he was looking for…Snape's erection was suddenly pressed against Harry's face and Snape wriggled deliciously.

"Oh!" It was Harry's gasp as he moved one inquisitive hand towards the zip of Snape's trousers - and looked up. Snape was breathing heavily and watching him with a look of heavy-lidded lust.

"Can I?" Harry mouthed, grinning. Snape shook his head breathlessly, staring straight into Harry's eyes with a look that suggested quite the opposite. Harry teasingly pretended to look disappointed and drew back.

"What a pity. I would have really enjoyed doing tha-"

And suddenly Snape's hard, leaking cock was forced deep into his throat. Harry didn't know how Snape could have undone his trousers so fast but soon he didn't care as his mouth was being filled so roughly that he could hardly breathe and Snape's fingers were buried in his messy hair. Harry closed his eyes in giddy ecstasy; the feeling, the taste was incredible. Very soon he began to run out of air, however, and the choke reflex at the back of his throat made him pull back - and his Professor let out a strangled moan of frustration. Harry quickly grasped Snape's cock in one hand and teasingly licked the head - and felt the violent shudder that ripped through his Professor's body. He glanced up; Snape had his dry mouth hanging open and was watching him in dim, breathless amazement.

Harry swirled his tongue over the tip again then proceeded to lick and kiss before taking as much of Snape's cock as was comfortable into his mouth and sucking; Snape's cock was soon dripping with his saliva as his tongue caressed it sloppily.

Snape bared his teeth; the incredibly wet sound of Harry going down on him was almost unbearable. He gripped the arms of his chair until his fingernails were buried into the wood.

Harry tightened his grip and twisted his head, sliding his mouth around Snape's cock then taking it deeper into his hot, damp mouth, then licking and allowing his own saliva to dribble down his chin. Snape closed his eyes rapturously and threw his head back, then groaned and wiped away a tear, his long black hair tumbling messily over his face. Harry opened his eyes blearily and thought his Professor looked infinitely sexy with his hair in a mess, his eyes moist and pleading and his tongue darting out to lick his parched lips. Snape moaned deeply in pleasure and Harry shivered delightfully - and started using his hand as well as his mouth. His knees were hurting; his neck was wet with his own saliva, and sweat was trickling down his forehead, but none of it mattered when Snape made noises like that. Suddenly there were fingers digging into his shoulders.

"Oh - stop, stop!" Harry didn't stop. "Damn you, Potter - I'm going to come, stop it! I don't want this to be over so quickly!"

"What do you want to do instead?" Harry asked innocently, gazing up at Snape whilst allowing his Professor to push him away shakily. Snape looked down at Harry, kneeling before him and trying to look chaste when his lips and chin were wet with saliva. He nodded to Harry's robes.

"Take them off. Take it all off."

Harry grinned dirtily and got to his feet. He took the opportunity to rub his aching knees and wipe his face, then started hurriedly pulling off his clothes with a fiery look on his face. When he got down to his boxers, he suddenly became rather self-conscious and paused, cuddling his robes over his chest. Snape reached out and snatched it away. He seemed to be having trouble keeping himself in his chair.

"Keep going." The voice was cold in its desire; fighting to restrain himself from lunging forward and jumping on Harry, Snape flung Harry's robe carelessly onto the cold stone floor and was then gazing instead at Harry's lean, muscular body with an obviously greedy hunger.

Harry tossed his pants onto the pile of his clothes lying on Snape's floor with a new-found confidence - due to Snape's obviously desperate longing to touch him…then advanced when beckoned and straddled Snape's lap excitedly, his straining erection pressing noticeably into Snape's stomach. Harry found his bare skin was soon enfolded in soft black material as strong arms wrapped about him tightly. He felt Snape's hands on his lower back - Snape was regarding him with a starved, ravenous look as he grinned and tilted his face, bringing it down to kiss Harry vigorously.

Harry felt as though he was being devoured by Snape's scorching caresses and moaned against his Professor's lips. He felt the arms about him tighten their grip and wrapped his own arms about his Professor's neck, kissing him back, passionately. Snape's hands found Harry's arse and Harry wriggled happily; his groin pressing firmly against Snape's continued erection and it was Snape's turn to moan against Harry's mouth.

Their kisses got more ardent; fierce and unrestrained, they kissed, bit and licked each other, Harry grinding roughly into Snape's lap and Snape groaning loudly, his fingers digging into Harry's hips and leaving white marks on the gently tanned skin. Harry suddenly decided that his Potions Master was wearing too many clothes. He reached his hands towards Snape's robes and started to detach the flowing black cloak from the black coat; Snape paused in kissing Harry and raised his eyebrows gently, looking intoxicated and dishevelled.

"I'm taking this off."

"So I noticed." Snape smiled weakly.

"There's so many buttons. It may take a while."

"I've got all night."

Harry grinned and they kissed again whilst Harry slowly undid the rows of buttons - when he finally got Snape out of his robes and coat and all that remained was his trousers and a white shirt, Harry paused again and draped all the black material carefully over the desk, causing Snape to smile gently. Harry turned his attention back to his Professor and ran his hands over Snape's shoulders and arms, finding them surprisingly muscular; Snape leaned in to kiss Harry again and sped up the pace once more; he took Harry's face in his hands and crushed their lips together hard. Harry closed his eyes and fumbled with the buttons of the white shirt; Snape eventually slapped his hand away impatiently, reached up and ripped his shirt open - buttons scattered across the floor and Harry gasped and, giggling, lifted Snape's wrist and started to undo the buttons on the cuffs - once again the material was snatched from his grasp and torn open.

"Think of the poor elves who spent ages sewing all these buttons onto your clothes!" giggled Harry.

"They're driving me mad." Hissed Snape into Harry's ear.

"Have you learnt your lesson about having too many buttons?" grinned Harry.

"Yes, yes - come on, hurry up and take the rest off!"

"I thought you had all night…" Harry mumbled into Snape's chest, gently licking the newly-exposed white skin.

"Oh, for Merlin's sake - I'll do it myself." And Harry found himself roughly lifted from Snape's lap and deposited onto the desk. He watched, looking dazzled, as Snape swiftly ripped off the remainder of his shirt and threw it away, then stepped out of his remaining clothes; Harry was sitting on the desk with his mouth hanging open when he was grabbed again and pulled back into his Potions Master's lap. And then there was skin on skin and it was so soft and Snape's tongue was buried deep in his throat and he'd closed his eyes and sunk into the embrace…Their erections rubbed against each other. Harry moaned softly.

"Professor? I need you to-"

"Severus."

"Severus…" Harry savoured being allowed to use Snape's first name: "Severus, please, touch me."

Once again Harry was lifted onto the desk - and this time gently pushed backwards to lie down - he felt the remaining chocolates crush under his weight and smear stickily onto his back. He wriggled. Severus climbed on top of Harry and paused.

"What's the problem?"

"Those chocolates…"

"Oh, who cares? Have you ever done a 69?"

"No. What do you do?"

"Think about the numbers - what do they seem to be doing to each other?"

Harry paused. Then suddenly:

"Oooooh!"

Severus grinned. He swivelled around as Harry lay back in anticipation - and suddenly found his erection greedily swallowed up into somewhere moist and hot. Harry cried out - and looked up. He hungrily put his hand on Severus' arse and pulled the hips down; his mouth opening eagerly. He felt Severus tremble as he closed his mouth around hard flesh and sucked blissfully, Harry closing his eyes and wriggling his hips at the warm sensation that was spreading across his whole body. Suddenly there were strong hands fiercely holding his hips still and his cock slid in deeper and touched the back of Severus' throat. Harry cried out again

"How do you do it without choking?" gasped Harry, releasing Severus' cock for a moment. The word that reached his ears sounded like:

"Practice." But, as Severus hadn't removed the bit of Harry that he was sucking from his throat, it was difficult to tell. He ran his tongue along the length of Harry's shaft and Harry trembled too, moaning as he devoured Severus into his mouth once more.

The pace got faster, harder; Harry felt as though he were permanently on the point of an orgasm that never seemed to come; he could hardly breathe, his jaw was aching and tears were streaming down his face but in the same moment his body was tingling and shivering hotly; sweat slithered off his burning skin and he felt he'd never been so hard in his life. He reached up one hand and dug his fingernails into Severus back; the white skin was slippery with sweat. Severus flinched and shuddered.

"I'm going to come, Harry." Harry almost fainted and those words alone were enough to push him over the edge; he could feel the tingling sensation at his groin start to explode within him -

"So am I."

There were a few seconds of frantic, desperate, reckless movement and suddenly they both tensed simultaneously; Harry screamed as he came messily into Severus' mouth but the scream was muffled as Severus came straight down Harry's throat in the same instant. Harry felt his body rock with the spasms of pleasure that promised to overwhelm him; he heard Severus groaning deeply and then suddenly his lover had collapsed, crashing down on top of him. They lay there, tangled in each other, sticky with sweat and panting for breath in unison, and there was silence…

Then Severus was dragging himself up and Harry could breathe a little better; Severus sank into his chair and rubbed his painful knees while trying to catch his breath. Harry raised himself up on his elbows and smiled a sticky smile at his lover, who raised an eyebrow at Harry's wild appearance and then grinned back. Harry allowed himself to fall back onto the desk and stared at the ceiling, exhausted - yet exhilarated too.

"How did you enjoy your reward, Mr Potter?"

"Well…I was going to ask for a handful chocolate frogs, but I suppose that will have to do."

"Insolent little -"

Harry giggled. He wriggled uncomfortably and lifted his hips - and found he'd been lying on one of Severus' white shirt buttons.

"So that was a reward, rather than a punishment?"

"I considered punishing you, but, seeing as this was the first time you have managed to successfully complete a potion in one of my lessons, I decided to reward you instead..."

"Next time, Sev, are you going to wear clothes which are easier for me to take off?"

"Next time, Mr Potter?"

Harry sat up, worried. Severus folded his bare arms and regarded him with amusement, eyebrows raised. Harry suddenly became very uncomfortably aware that he was naked.

"Well I…I thought that…I…"

"This was supposed to be your reward for doing well in class."

"Seems a very extreme way of getting me to concentrate in class." grumbled Harry nervously.

"Make no mistake, Mr Potter; from now on I shall reward you if you excel, like today; but I shall also punish you if you fail to keep up with the rest of the class."

Harry beamed as he saw the twinkle in Severus' onyx eyes. "What sort of punishment do I get?"

"Well, considering your natural lack of ability in Potions I presume you will be finding out reasonably soon…I believe you have another lesson tomorrow?"

Harry was suddenly eyeing Severus with an incredibly smutty look and smirking.

"Yes. I can't wait for Potions tomorrow. I never thought I'd be saying that."

"Cheek!" grumbled Severus, but his eyes glittered wickedly, "And neither can I - wait, that is - oh come here and let me kiss you."

Harry wriggled off the desk eagerly and straddled Severus' lap again; they kissed in rapturous silence and Harry promptly decided that whatever potion he made tomorrow was going to be terrible. Not that he needed to decide that in advance - it usually happened without him even trying.

Half an hour later and Harry was scampering down the dark dungeon corridor on his way back to the Gryffindor Common Room and trying to make himself look less dishevelled. He had never looked forward to Potions so much in his life.

Back in the Common Room, Hermione saw Harry enter and quickly prodded Ron - who pulled a piece of parchment out of his pocket and shoved it hastily into the fire. If Harry's mind hadn't been occupied on other things, he would have noticed - and caught the words written on the parchment before they were engulfed by the dancing flames:

'Granger, Weasley; kindly copy out this list again and make sure Mr Potter finds it before next Wednesday's Potions lesson. Please refrain from telling him where the list came from. Failure to do this or your informing Potter of the list's origin will result in detention. Professor S. Snape.'

THE END...

So it was him!I dunno if I should write the next lesson's punishment and add it on as a second chapter, seeing as Harry is obviously going to mess up and deserve it...what ya think? Did you like this one - was the slash any good? Let me know cos I really want some reviews! Meiow! xxxxxxxxxxx