Author's Note

"I dare you to write a Diamond Dog fucking Rarity, knotting her in her ass as he cums inside her. Min length 300 words." - The Abyss

Rarity x Diamond Dog (RainbowBob)

“Yes, yes, right there, you mongrel mutt you!” Rarity begged. Her back legs were weak at the knees, her body unable to support itself. Instead, she laid with her front hooves on the floor, her face pressed hard against the clean surface. “Keep on going! Don’t stop!”

“Yes, right away, Miss Rarity!” Rover replied. He renewed his vigor, smashing his hips against Rarity’s rear, every thrust of his member back into her nethers eliciting a new moan or shout of approval from Rarity.

She was covered in sweat, lust emanating from every pore of her body to the point that she felt like she’d melt from the heat burning up within herself. Every second rolled by like an eternity, the two lovers lost in their own world of rough rutting and pounding pony pussy.

Rover’s paws traveled down the slick behind of Rarity’s flanks, his claws poking her plump tush like he was squeezing a delectable sweet marshmallow. The diamond dog licked his lips with his long, rolling tongue. Her scent was simply divine, like some goddess of lust that he was in complete control of. Every moment with her made him want her more. To taste, feel, smell, and most of all, fuck his heart out. Rarity, in turn, threw him a bone every now and a then by calling out his name with saliva flying from her lips or begging for more of his large girth to enter within her.

“I’m gonna c-cum!” Rarity shrieked. Her tongue slid out of her mouth as a scream parted her lips open. The coolness of the floor did nothing to stop the heat erupting from her body. She felt like an inferno fueled entirely by sex and want, her needs fulfilled by the generous givings of Rover’s cock. She could hardly believe she was finishing already, usually one to outlast her lover, but with a new species experimentation she was helpless to these new pursuits. At least now she knew why they called diamond dogs. They stayed hard no matter what!

With one last moan of arousal leaving her mouth, Rarity came, a shower of sexual juices flowing from her lower lips like a dam that was burst open. She could hardly contain herself, shudders passing up her spine as a collective tidal wave of pleasure traveled through her body and crashed against her brain, leaving her in a state of bliss like ecstasy that left her thought process a jumbled mess. All she could do now was drool and mumble unintelligibly while Rover didn’t let up a bit in his pace.

Slurping up some of her drool and checking over her shoulder, Rarity said, “Okay, that’ll be enough for now.”

“B-but I haven’t cummed yet! I can’t stop now!” Rover said, squeezing her butt harder as he stepped it up in his thrusts.

Rarity’s legs nearly gave out, the overload of pleasure from her orgasm and never ending attention to her pussy leaving her in tears of bliss. “I’ll suck you off instead! Just… just stop it right now!”
“No, I mean I literally can’t stop,” Rover told her. She halted his plot pounding, pulling his shaft slowly out of her. But he stopped, and Rarity nearly shrieked at the sudden tugging sensation prodding her vaginal walls. Although she couldn’t see it, the center of his penile shaft had expanded outward so much, it was impossible to remove from within her without doing some serious damage. “I need to cum now!”

“Oh for Celestia’s sake… fuck!” Rarity shouted, once Rover returned to thrusting with a new vigor. The increase of size in the middle of his shaft was obvious now, her nether regions being completely wrecked and her inner walls stretched to their fullest with every movement he made.

Before too long, Rarity was left a panting mess on the floor, while Rover relentlessly rutted her senseless. Even with her orgasm over, Rarity’s senses of touch was enhanced better than before in her vagina due to its sensitivity from her release from before. The only sounds that surrounded them was Rarity’s weak moans and the wet slap of Rover’s balls against Rarity’s body. His pace just continued to pick up and go faster and faster, until Rarity thought she’d be torn in two from his thrusting.

Then, with a mighty howl, Rover came inside Rarity. His penile shaft was still expanded, preventing the cum from leaving her. His sticky semen soon covered her inner walls in its white residue, his seed squirting deep within her as he filled her to the brim.

“Fuck… oh fuck, it’s so much,” Rarity muttered, torrent after stream of semen being discharged into her pussy. Finally, Rover’s penis became flaccid enough for him to withdraw from within her, a trickle of jizz trickling from Rarity’s pussy the moment he was out.

“S-sorry, Miss Rarity, I should have warned you before!” Rover said, falling to his knees with his head downcast and ears drooped down.

Gulping while shuddering at the warm sensation flowing like a river from between her legs, Rarity steadily got back to all fours. “Quite alright, darling, no need to be sorry about doing such a good job. In fact, I think you deserve a reward. A treat, in fact.”

Rover looked up, his tongue rolling out from his jaws as he took the begging position. “Treat?”

“Yes. An extra special treat.” Rarity raised one of her legs, a blob of sticky jizz falling from her lower lips. “Now, would you be ever so kind to help a lady find some lube?”