As quietly as he could, without waking Harry, and with only a minor creaking of his bed, Ron slipped out of his dormitory room and crept down the spiral staircase of Gryffindor Tower. A cloak clutched around him to ward off the cold and hide the tent forming in his trousers, he pushed past the Fat Lady, who snorted at him in displeasure.
"You're out awfully late, young man," she grumbled as she peeked at the redhead through half-closed eyelids. "Don't expect me to let you back in when you come back." She grunted and went to sleep. Ron ignored her and slipped down the darkened corridors.
He encountered little trouble and the way, only a very near run-in with Peeves, who was busy askewing the portraits on the second floor to drive Filch nuts and didn't see the redhead creep past in a cloak and bulging trousers.
When he reached the third-floor corridor he looked around to make sure there was no one, then slipped through the unlocked door.
It had been last year that he, Hermione, and Harry had gone down and found the Philosopher's Stone, and since it was now gone so, too, were most of the traps guarding it. Most, Ron hoped, but not one in particular.
He pulled open the trap door in the floor - which still bore scratch marks from Fluffy's huge claws - and peered down into the darkness. If it wasn't there anymore... well, if it wasn't there Ron would just be a smear on the stone floor in a few moments and wouldn't have to deal with the disappointment.
The Weasley boy lowered his legs into the hole and prepared to drop down. The bulge in his trousers throbbed in anticipation. Just as Ron was about to jump,-
"Ron? What're you doing?"
Ron gave a start and looked in alarm towards the doorway. There was a ruffling and suddenly Harry appeared out of nowhere, the folds of the Invisibility Cloak fluttering in his hand.
"Oh, blimey, Harry, why'd you follow me?"
Harry took a step towards Ron. "You don't usually take off in the middle of the night without letting me know about it," he replied, "and especially not with what's going on in the school right now..."
Harry Potter looked at Ron, whose legs were dangling down into the darkness of where the Philosopher's Stone was once held. "Why're you going into there?" he asked.
"Er, no reason," replied Ron a little too quickly, adjusting himself so that Harry couldn't see the boy's raging hard-on.
"Are you..." Harry raised an eyebrow. "Have you... got a boner?"
Ron let out a shuddering sigh. Shit, he thought, he knows. "Yeah..." he admitted.
A look of confusion and then realization washed over Harry. "Oh my god," he whispered. "You're..."
"Yeah..." Ron repeated. Harry flushed. "Oh wow."
"So, er, you wouldn't mind buggering off and letting me go in peace, would you?" Ron asked, embarassed. His face was beginning to match the colour of his hair. Harry crossed his arms. "And how would you suppose you'd get back up once you were done?" Harry asked. Ron hadn't thought of that.
"Here, I'll tell you what," Harry said. "I'll go grab my broom so you can get out. I'll come in with you, and neither of us will say a word about this to anyone."
Ron nodded fervently. He just wanted to get down there. "Hurry, Harry," he whispered. Harry turned for the door and slipped out. For just a moment, Ron could have sworn he'd seen a bulge in Harry's trousers as well.
Waiting for Harry to return was torturous. His hard-on throbbed angrily, begging to be stimulated. Eventually though, the Potter boy returned, broomstick in hand. "Ready?" Harry asked, his bulge quite apparent now. "Ready," replied Ron, and dropped down into the hole.
He fell through the darkness, expecting to strike the stone and become nothing more than a splatter at the bottom. But to his delight he landed with a whumph onto the Devil's Snare and rolled out of the way so Harry could land. When both boys were laying on the plant, they glanced at each other in the darkness and began to writhe.
The plant got the message. Tentacle-like tendrils extended from the unseen depths of the plant, tickling the boys' legs as they made their way towards the waistbands of the respective wizards' trousers.
The tendrils began to tug at the boys' pants as seperate tentacles grabbed hold of Ron's and Harry's arms. The two were pulled away from each other and Ron lost sight of Harry in the gloom. The Devil's Snare had his arms pulled out to his sides and was determinedly disrobing him.
Ron let out a shuddering breath as a tentacle brushed against his erection, which was now free of the confines of his pants. The tentacle wrapped around it and slowly began to pulse, sending little waves of pleasure through Ron's cock and up his body. The tentacle was slightly wet and slick, undoubtedly lubricated by some juice the plant generated. Good, Ron thought, it won't hurt as much.
Nearby, Harry was experiencing something similar. A tendril was playing impishly with his left nipple, an arousing affair to be sure. Another was tickling his hard-on, making Harry buck a little in pleasure. His broomstick fell from his hand into the folds of the plant and for a moment Harry worried that he'd just relinquished grip on the only way out of the dungeon, but the Devil's Snare had a better plan. Harry saw the broomstick float up in front of him, held aloft by a slick tendril. The Snare began to caress the broom, coating it in a slippery substance. Harry's eyes widened as it dawned on him what was about to happen.
A tentacle was feeling its way gingerly towards the ginger's bottom. Ron convulsed as it traced down the length of his spine, stopping just at the rim of his arse. Its thin tip poked lightly at his opening, slowly circling it and teasing the boy. "Oh g-god," Ron stuttered, the foreplay killing him, "d-do it alread-dy!"
With a lurch the Devil's Snare plunged into Ron, driving a tendril into the clenched muscle of the redhead's ass. Ron gasped in pleasure as he was penetrated by the randy plant. It dug into him, going deeper and curling up in the cavity of his inner ass. Then it began to stroke Ron's prostate lovingly. Ron moaned.
Harry could sense the broom hovering somewhere close behind him. It was slick with whatever natural lube the plant produced, but nonetheless he was a bit apprehensive of the prospect of his broomstick being driven up his ass. Then he felt it.
A light pressure, between his cheeks. The tip of the broom handle was pressing into his ass, guided by the tendril. It was trying to find his opening, trying to find a way in. When it found what it was looking for, the Nimbus Two Thousand began to slowly force its way into Harry's ass. As the echo of Ron's pleasurable moans echoed in the room, Harry let out one of his own. The Devil's Snare was carefully impaling him on his broomstick, and he was loving it.
The tentacle servicing Ron wasn't being nearly as careful, it was now enthusiastically thrusting in and out as it massaged Ron's prostate. At this rate, Ron realized, he wouldn't last five minutes. He was being jacked off by one tentacle while another provided such intense stimulation it was a wonder he had never thought to come down here before.
Harry drifted into view through the gloom, as the tentacles fucking them slowly converged. It appeared to Ron as if Harry was getting fucked by his own broom, something rather erotic for Ron to think about. Harry, who's head was tilted back in pleasure as he was pleasurably rammed by his lubricated broom, looked around as the sound of Ron's moans grew closer. Ron looked as happy as Harry felt, with a tentacle of respectable girth driving into his ass and another servicing his front. Sadly, Harry's cock was being neglected, a fact the Devil's Snare seemed to have realized.
Two more tentacles grabbed onto Ron's shoulders and began to tilt him so that he was facing down, horizontal to the ground. They manoevered him towards Harry, his head drawing closer to Harry's untended cock.
As Ron's head approached Harry's, another tendril grabbed Ron by the hair. It forced his mouth down over Harry's awaiting member, and began to forcibly bob Ron's head.
"Mmmfffr!" Ron exclaimed as his mouth was filled with cock. Harry gasped at the sensation. The Devil's Snare was most assuredly enjoying this, the boys thought, as they were simultaneously fucked by the plant. It was undoubtedly stroking its own cock-tentacle somewhere in the nether-regions of the plant, seriously getting off on forcing Ron to give Harry head. But Ron was enjoying it immensely.
He and Harry... they'd never had any sexual relations. Much to Ron's disappointment. He'd had something of a crush on Harry for a while, and this mutual experience for them could be the start of a very wonderful series of events, he hoped.
But for now he'd just enjoy the Devil's Snare forcing Harry's cock deeper down his throat, then relinquishing it from his mouth only to stuff it down again. Both boys were reaching climax, the various tentacles of the Devil's Snare working their magic in quite a wonderful way.
It was Ron who came first, the tentacle inside him proving too much for his cock to handle. He began to thrash as the tendril around his member pumped harder, squeezing him as he orgasmed hard. The sound of his juice splattering onto the leaves of the plant below were masked by his and Harry's moans of pleasure, moans that would surely have awoken half the school had they not been in a lost dungeon on the third floor.
Harry felt a pressure welling up in his balls as his Nimbus struck his prostate over and over. He let out a cry as he too came, hot cum bursting into Ron's mouth. He felt a moment of guilt for what was undoubtedly a shocking moment for Ron, but he didn't know that Ron was enjoying every drop that spouted forth from Harry's cock. Oh, it was glorious.
As soon as Harry finished orgasming the tendrils pulled the two apart and retracted from the boys' sensitive areas. The tendrils laid the boys down onto the foliage below and slunk back into the depths of the plant. The boys lay gasping for air and strength for several minutes, exhausted from the gleeful pounding their bodies had received. Harry felt his Nimbus beside him and reached for it, then let his arm fall limp. "Fuck it," he muttered, "I'm too tired to go back up to Gryffindor Tower."
Ron murmured in agreement. "Let's..." he said quietly, lazily, his mind too slow to form a strong sentence. "Let's just... lay here for a while. Mmm... yeah. That sounds good."
The two continued to lay, slowly drifting into sleep. As they slept beside each other small tendrils from the Devil's Snare emerged again, slowly, and crept towards the sleeping boys.