Pumpkin Cake leaned into Pound Cake as she bit playfully along his chest, rubbing her already-drenched marehood along her brother's rapidly growing erection. Not long after she had begun, Little Pounder was saluting at full attention.

“Glad to see somepony is ready to play,” Pumpkin breathed out lustfully, stroking Pound's member between her thighs as she humped his length with her groin. Pound felt a few beads of sweat roll down his forehead.

“She is sooo hot...” he thought to himself, grinning as he stroked his sister's back. She cooed in pleasure from his gentle touch.

Pound reached his neck forward and locked lips with Pumpkin, slowly rolling forward so that he was sitting up with her in his lap. Pumpkin could really appreciate just how much he'd grown since the last time she'd seen him. Four months really could be a long time, especially when those four months are used to both bulk up and trim.

“You have no idea how much I've missed seeing you,” Pumpkin whispered as she nipped at Pound's lips. “There were so many guys there that were just... ugh.”

Pound felt himself get a little flustered at that, and not the flustered he felt when he saw Pumpkin. This was an angry fluster.

“None of them tried to-” Pound started, but Pumpkin stopped him with another gentle kiss.

“No, Pound. You're my one and only,” she said with a giggle, rubbing her cheek against his as she stroked his wings. “I love you.”

“I love you too,” Pound said as he slowly pressed Pumpkin onto her back, kissing down her neck and chest until he was leaving a little trail of smooches down her stomach. She giggled at the delicate nips until they turned into moans as Pound reached his target destination.

Pound blew gently on her mound, nuzzling her gently to see how she responded. She seemed to moan every which way he touched her, she was so sensitive. Settling his muzzle in close, he took some time to take in the sight of her fully exposed to him.

She was beautiful, her legs firm and round, with her rump the perfect shape to grab onto. Leaning in, he nosed right up to her labia before letting his tongue flick out tentatively, finding his taste for the flavor of her arousal while squirming between the two folds before forcibly slipping between them.

“P-Pound!” she hissed through her teeth, one of her front legs snaking down to grasp onto his mane, giving a swift tug on him to alert him of his good job thus far.

Taking the initiative, Pound shoved his tongue as far as he could stick it out of his mouth. Pumpkin groaned, her back arching as she grasped Pound tightly. Pound let his tongue explore, leaving no part of her untouched. Occasionally he would raise his tongue up, brushing against a little bump at the tip which he quickly learned was a good bump.

The first time he'd brushed over it, she about choked him out with the sudden scissoring of her legs.

“R-right there,” she breathed sharply, her body playing all sorts of games with her.

Pound let his tongue massage her for a little while longer until he could feel her body trembling. She was close, he knew it. Her breathing was a tight panting, the musk she gave was intoxicating and thick between them.

As he felt her up with his hooves, he gave her one last long suckle on her clit. It sent her over, hard. She gasped out loud as her back arched almost painfully, her juices flowing freely out of her.

Pound held her for a full minute, rubbing along her, stroking her slit as she continued to orgasm, giving her thorough attention through her sensational bliss.

“Pound...” she whined as her orgasm subsided, the last pulse of pleasure leaving her. 'That... was... awesome...” she gasped for breath as Pound climbed atop her, nuzzling her affectionately. His muzzle reeked of her lower section, something she didn't find nearly as disturbing as she initially thought.

“I hope it was,” Pound said with a laugh as he locked lips once again with his lover, savoring her the taste of her mouth intermingled with her arousal. They both fought furiously for domination, snapping tongues and thrusting necks like it was a war.

Eventually their battle slowed down as Pound aligned himself atop of Pumpkin, lining his cock with her opening. Gently pushing forward, he slowly slid into her, pressing until he went in as far as he could. They were a perfect fit. Pound was amazed at how hot her insides were, how tightly they coiled around his erection.

“S-so... full...” Pumpkin moaned, stretching out her back while Pound pinned her hooves under his. Pumpkin flashed him a flushed smirk.

“Thinking of taking charge here, huh?”

Pound responded by pulling out slowly, leaving only a little less than a third of himself inside of her. She desperately tried to push herself back onto him, but her current position along with Pound's firm hold on her legs kept her locked where she was.

“This time, I think I'll have some fun,” Pound said as he leaned in to graze his teeth along Pumpkin's neck. Pumpkin panted heavily before squealing sharply as Pound thrusted himself back into her, burying himself almost to his hilt. He repeated the maneuver, pulling out just enough so that he could pump back in with plenty of force. Pumpkin let out heavy gasps each and every time he found himself deeper within her, until she found herself locking her rear legs around Pound's hips. As soon as Pound couldn't pull out anymore, he decided a new course of action. Using the small space of movement he had, he pumping in and out furiously, drilling her silly.

Pumpkin's tongue lolled out of her mouth as she panted quickly, her breathing high and short. Pound's, on the other hoof, was slow and measured. He averaged about three thrusts per breath in, three per breath out. He kept up a solid rhythm this way, one that paid off as Pumpkin cried out in bliss as her walls clamped down on his member something fierce, clinging on and refusing to let go.

Pound desperately tried to put in a few more reps, but the tightness and the incredible heat was too much, and soon after she had come, Pound blew his load as deep into her as he could muster before keeling over and slumping down above her, keeping his hips and stomach arched enough that he didn't crush her beneath him.

“My Faust,” Pumpkin gasped, her chest rising and falling dramatically as she struggled to catch her breath, “you've really gained some endurance, Pound.”

Pound chuckled twice, light chuckles that seemed deeper than before she'd left. He really had grown up a bit while she was gone. It made her a little sad, when she thought about it. He wouldn't need her to protect him now.

She snuggled up under him, though, and all feelings of regret were instantly lost. Now he could protect her, she giggled as she imagined Pound fighting off dragons and mighty warriors.

Pound rolled onto his side, reaching across Pumpkin and pulling her close.

“I'm so glad you're back,” he said as he nuzzled her gently. She returned the gesture.

“Me too, big guy. It was lonely at the school, you know. Just a bunch of over-dramatic mares and thick-headed colts who thought they could cook,” Pumpkin snorted. “You would have been able to beat them at the challenges with your eyes closed.”

Pound had to admit, when he wanted to be, he was a decent cook, something he assumed was just a family trait. But Pumpkin was the real artist in the kitchen. She could whip up a delicious meal out of thin air, it sometimes seemed.

The two sibling rested in their glowing embrace for a while, completely oblivious to the world.

And to the subtle sounds of a lockpick.

The two eventually nodded off to a light nap, the afterglow radiant between them. The sheets were a hot mess, obvious evidence of what had transpired. The room smelled painfully strong of sweat and jizz, and to top it all off, the two had seemed to have forgotten one crucial factor: the walls in the house weren't sound-proof.

Meaning, Rapid Souffle had been forced to listen to their sexcapade for the past half hour.

And she. Was. Pissed.

Not at the relationship that the two shared. Heavens no, she thought that was just about the most adorable thing besides puppies. No, she was upset that she had to listen and COULDN”T FREAKING JOIN IN!

Which led to her pulling her lockpick set from her bag and setting to work on the door that dared stand between her and what might have been the sexiest three-way of her life.

“Come on,” she breathed as she navigated the pick through the old door lock. It was a simple tumbler lock, but it was old and worn. It liked to catch and hook on the darnedest of places. “Why won't you just-”

She stopped dead as the lock softly clicked open. Twisting the door handle, she slowly slunk into the room, looking around. It was a simple room, with two beds, two dressers and a window between them. One side of the room, Pumpkin's side, was cleaned and organized, with a pair of simple suitcases stacked beside the dresser waiting to be unpacked.

Pound's side, however, was damp with the scent and feel of sex in the air. The two siblings were curled up with each other between the bedsheets, sleeping quietly. Rapid thought they looked so cute together.

Trotting around the room a little, stalling until the two decided to rise from their nap, Rapid looked around the room, poking subtly though cabinets and such. She didn't take anything, she just looked. And she put everything back exactly where it was.

Rapid decided that she might as well help the two out a little while she waited for them to rise. She pranced over to the window and through it open, letting a warm, refreshing breeze trail through the musky-smelling bedroom.

Taking a deep breath of the outside air, Rapid turned around to see that the breeze was having the added side effect of rousing the twins early. Rapid grinned as she made her way to Pumpkin's bed and hopped up, settling it for the show.

Pumpkin was the first to wake, not even noticing Rapid's presence through her grogginess. Nonetheless, she proceeded to nudge Pound awake.

“Five more minutes...” he muttered. Pumpkin huffed and smacked im up the back of his head, waking him into a more sociable state.

“Rise and shine, baby,” Pumpkin said with a half-lidded grin, eyes still wishing they were asleep.

Pound slowly opened his eyes and yawned before giving Pumpkin a slow, drawn-out kiss.

“Aw...”

They both moved so fast at the sound, you'd have thought they'd been tased. Both of them shrunk to the wall, Pound with a protective hoof around Pumpkin while Pumpkin tried to act like a shield for Pound. Too cute, too cute.

“No no, go back!” Rapid insisted. “You guys were so cute the way you were!”

“R-rapid!” Pumpkin stuttered, face going red as she looked back and forth between her brother and the sheets. “How'd you get in here!”

“The door, duh,” Rapid said with a flick of her hoof, pointing to the now unlocked bedroom door.

“We were busy here!” Pumpkin practically screamed. “How long have you been there for!”

“Apparently not long enough, as I missed the good stuff!” Rapid said with a pouty face, crossing her hooves. “You guys need to let me know the next time you plan some of the chitty-chitty bang-bang when I'm around,” she said as she hopped from the bed and trotted over to the door and pulling it open.

“I might want to join the next one.”

With that, Rapid disappeared out of the room.

Pumpkin and Pound looked between themselves, sharing a glance.

“Never speak of that again?” Pumpkin suggested.

“Done.”