Author's Note

Written as a request from a patron (speaking of which I do have a Patreon if you want to give me money or something). Spike is of course meant to be above legal age.

Contains: Twilight, Spike; anthro; bimbo, impossibly large tits, multiple dicks, dick growth, hyper insertion, sex

Dick Fitting

The wet, squelching sound of rhythmic penetration echoed in the bedroom, accompanied by the clack of skin and scales striking against each other. Twilight's soft panting and occasional moans came like chords playing over the percussive beat, and her high pitched voice occasionally came in to replace them. "That's two," the alicorn said, adjusting her glasses and then jotting down a few lines on her notebook. She was bent over on her knees, but thankfully her hands were free to write, the front of her body held up horizontal by the sheer size of her tits.

Behind her, Spike kept thrusting in and out of her sex. His claws kneaded the alicorn's soft, massive ass, but his own expression was uncertain. "Twilight, are you sure this is how you're supposed to go about it?"

"Of course, silly," answered Twilight, tapping with the end of her pencil on her overinflated lips, and almost instinctively starting to suckle on it like she would with a dick. Her horn lit up again, and the already impressive bulge in her belly swelled even further. "That's three."

Spike's thrusts grew a little faster. He did have to admit he was enjoying himself, but still he wasn't fully convinced. "But wouldn't it be the same if you just made mine bigger instead?"

"Four. Of course not!" Twilight replied as her horn lit again. "I'm trying to see how many dicks I can fit inside me at once, not how big of one I can take! Five." Again, a new cock materialised on Spike's crotch, just as massive as his impressively big original one. "It's, like, not the same, dummy! Uh... Six? Six comes after five, right?" She moaned, her notebook and pencil discarded on the bed as she started to play with her nipples, her glasses falling from her face.

Spike just rolled his eyes, and spanked Twilight's ass hard enough to leave a mark. For what it was worth, every new cock he grew made him enjoy fucking her more, and thus with each new one his thrusts grew stronger and faster.

Twilight's horn gave a few more spurts of magic, while the alicorn's eyes began to roll back into her head. "Ten? Or- Or was it twelve?" she slurred out, but even as she said that her horn kept cycling through the same spell. Her belly was stretched wider and wider, each new cock she added to her assistant bloating her insides further. "Oh dear, I think I lost count," she breathed out, but still she didn't stop giving Spike more shafts. "Oh oh oh- Ah! Fuuuck!" Her eyes fully rolled back into her head, and her words turned to an incoherent babble of moans. Occasionally, another flash of magic lit her horn, but for the most part she simply kept cumming and drooling.

Spike's thrusts were blindingly fast at that point, the smack of his thighs against Twilight's leaving hers reddened, the alicorn in front of him stuffed so full of cocks her belly would have been larger than the whole rest of her body had it not been for her abnormally huge tits. "Heh," the dragon grunted. "I wonder if any of your other dumb slut friends can take this many. Or maybe I could have one of them on each cock? Or each on a pair?" Fantasising about that, he kept slamming into Twilight's cunt with his more than a dozen dicks.