Chapter Text
“Stick it in already,” said Harry, bent over as far as his packed midsection would allow, looking back over his shoulder. “I'm dying here.”
“I wish you'd just spontaneously combust, Potter,” hissed Malfoy through gritted teeth. He was ridiculously bow-legged, the snout of the snake hanging between his pale thighs, his dick huge and purple with the almost unbearable pressure the emerging reptile was putting on his prostate. “You bloody wanker. This is... this is sexual extortion you're doing here.”
“C'mon, it'll take your mind off, er, things,” laughed Harry, spreading his cheeks with both hands. “I promise.”
“I doubt I'll even be able to get near enough your hole to put it in,” grumbled Malfoy. “Not with this belly in the way.”
“Rest it over my back,” said Harry, bending a bit more. His stomach felt like there was a stone inside it, but at the moment he was far too turned out to even remotely care about the implications. All he knew was that he wanted to get fucked by Malfoy's big cock, and that he wanted it to happen while Malfoy – his asshole dilated to unbelievable proportions, his gut racked by cramps – was struggling to give birth to an enormous snake.
“Ugh,” said Malfoy, hoisting his enormous belly over the shelf of Harry's back, the blunt tip of his cock pressed against Harry's eager hole. “It better be worth it, Potter,” he added, and he pushed in.
Harry had never had something as big as Malfoy's cock up his ass. The pain, at first, was almost shocking: it felt as if he was being split in two, and he let out a groan. But then he heard Malfoy moan in pleasure, and he remembered what was happening to the other boy's ass, and imagining how intense the sensation must be for him was almost enough to make him come on the spot, the walls of his rectum contracting over the intrusion as Malfoy began to fuck him in earnest.
“How... are you... so bloody... tight, Potter?” panted Malfoy, his gigantic gut sliding over Harry's back with every thrust of his overworked pelvis. “It's like a vise in here.”
“I'm looser than you were half an hour ago,” said Harry, his hand moving franctically around his erection. “And look at you now!”
“I'm going to fill you up,” promised Malfoy, clearly on the verge of orgasm himself. “I'm going to make you so much bigger than I am, Potter, just you... AAAAH... fuck, it hurts, it hurts so bad, fuck, Potter, I need to come, I need to... AAAAAH!”
Harry came with a shudder, spending himself on the side of the armchair he'd been leaning against, his orgasm brought about by the feeling of the great jets of sperm released into his intestines by Malfoy's huge cock. Malfoy slid out of Harry's now slightly gaping ass and staggered backwards, groaning in pain. Harry turned around: there was now almost a foot's worth of snake hanging between Malfoy's shaky legs, its slick body as thick around as a man's arm, its triangular head trashing about in annoyance as gravity fought its battle with the limits of Malfoy's overstretched hole.
“Lie down,” exorted Harry, his cock already stirring back to life at the scene unfolding before his eyes. “Fucking hell, this is unbelievable.”
The longer it got, the thicker the snake's body became. Malfoy, enormous erection pointing up to the ceiling of the Room, had tears streaming down his splotchy cheeks as the contractions racking his huge stomach forced inch after inch of the gigantic creature out of his poor, abused intestines.
On more than one occasion, Harry was sure that the sheer diameter of the snake's body would prove too much for Malfoy's to handle, and eventually he was forced to step in and use his hands to cup the creature and prevent Malfoy's impossibly dilated hole from tearing. The ordeal went on for almost an hour, unbearably slowly at times, breathtakingly fast at others. Malfoy was speechless, delirious with either agony or ecstasy, or possibly a mixture of both.
At last, the tail of the snake slithered out, causing a huge eruption of pent-up cum from Malfoy's engorged organ and leaving his hole red and gaping in its wake. The magical snake, Harry estimated, was longer than Malfoy was tall, and as thick in the middle as its former host's upper thigh. Malfoy's belly had returned to its original state, with just a trace of residual swelling.
“See? You were amazing,” said Harry, gently. Malfoy opened his eyes. He looked exhausted.
“I'm so happy it's over,” he mumbled, searching Harry's hand with his pale, sweaty one. “It hurts everywhere and I think my asshole is completely ruined.”
“It's not,” promised Harry, caressing the back of Malfoy's hand. “You just need a few minutes to adjust, a nice bath and a good night's sleep, and you'll be as good as new.”
Draco nodded, wincing slightly as he moved his battered pelvis to a more comfortable position.
“You know what?” he revealed, grinning faintly. “I never came as hard as I did while the snake was coming out.”
“I bet,” said Harry, flashing back to the feeling of Malfoy spurting up his ass. “It felt like a hose when you came inside me.”
“Did it, now?” said Malfoy, studying Harry with a very pleased look on his face. “I guess that explains why your belly looks so bloated, then. I filled you up properly.”
Harry looked down. Malfoy wasn't joking: his whole abdomen was gently rounded out, as if he were five or six months pregnant. He pressed his palm against the tight surface – the whole thing felt hard and packed now, not just his stomach. At this point, it was undeniable. He expected to feel shock or dread, but it was actually excitement that flooded his mind as he caressed his swollen form.
“I'm going to be enormous,” he said, guiding Malfoy's hand to the side of his gut. “Much bigger than you were.”
Malfoy's pale eyes were huge in his pale face.
“You will,” he said, staring at Harry like he was the best thing he'd ever seen. “It's going to be wonderful, Potter.”
“It will,” agreed Harry, his stomach groaning ominously, and he bent forward as best as he could to finally give Malfoy a kiss.