Author's Note

Prompt Three: *Write about/draw a mare or stallion being penetrated!*
Fetishes Include: M/M, Incest, Cuddling
There was actually a whole extra scene planned for this one, but unfortunately it is now 12:46 AM and I want to sleep so I decided to end it here (that and my quality is worse when I'm too tired to function). Who knows, maybe I'll rewrite it someday! Either way, enjoy and feel free to give feedback!

Prompt Three: Thunderlane and Rumble Play in the Park

Thunderlane loved Cloudchaser, really, he did.

His heart throbbed every time he laid eyes on her, and her lips were the softest and most lovely he’d ever had pressed against his in a fit of passion.

Until he’d first kissed his brother.

Nothing could compare to the feeling of Rumble's mouth desperately pushing against his as he begged him to take him then and there. The first time was the night after the first filly in his class had gone into heat, he’d come home pent up and Thunderlane just couldn’t resist his foalish musk. That night changed both of their lives forever, and they never regretted it for a second.

It had been just a few days since he’d last snuck into Rumble room for a quiet fuck after taking his fillyfriend for a ride next door.

He sat on a picnic blanket with Cloudchaser, watching over the colt as he played with his friends in the mid-afternoon sun. His cute flank swayed as he cantered around the park, giggling and shouting as he play-wrestled, played tag and chatted happily with fillies and colts alike.

Cloudchaser hugged his side, snoring cutely after the picnic they’d shared as they watched the foals play.

Thunderlane licked his lips as he saw his brother lag behind his friends during a race from one end of their play area to the other. Rumble blushed and shuffled his hind legs as he hid his slowly emerging cock, having caught a view of Pipsqueak’s rump.

The older pegasus’ own sheath twitched at the sight of his sibling’s cock sliding from its sheath. It was impressive for his age, being considerably larger than any of his peers.

“H-Hey guys, I-I think I’m gonna go steal some of Thunderlane’s food, I’ll be back in a bit!” he said, his friends shrugging and continuing with their game as he rushed to the picnic blanket on the other side of the park.

Making sure that his friends didn’t follow him and that Cloudchaser was too lost in her land of dreams to notice him, the colt flicked his tail up slightly as he wiggled his flank.

“Wassup, Rumble?” Thunderlane asked, a smirk crossing his face as he looked deep into Rumble’s eyes.

“I-I just can’t stop thinking about you…” he said, his face glowing red as he stared back at his brother.

“And I just can’t stop watching your little flank~” Thunderlane teased, pulling him into a rough brotherly hug to cover the fact that his hind hoof gently pressed at his tight pucker, making him squeak.

“I-In public?” Rumble whispered, looking around shiftily to make sure no pony could see what was happening.

“Why not, Chaser’s asleep, and your friends are playing. I’m sure we could find a nice, quiet spot~,” the dark pegasus said, the tip of his cock pressing against his brother’s sheath. He pressed his hoof harder against his sibling’s tailhole, making his wings shoot from his side as a mix of pain and pleasure shot through his body.

“F-Fine!” he said, squirming out of his older brother’s tight embrace and leaping to his hooves.

“Don’t seem too eager, 'lil bro!” Thunderlane teased, barely hiding his own excitement from his voice.

He gently lay Cloudchaser down on the blanket, making sure she didn’t stir as he shifted her to make sure she stayed comfortable until he returned.

Rumble glanced around the park awkwardly to ensure nopony was going to see them leave, his brother giving a cursory glance before flicking the colt’s muzzle with his tail playfully as he trotted by, heading towards a little-used clearing hidden from the rest of the park.

Following closely, he drew a deep breath of his thick musk into his lungs, biting his lip as his cock throbbed beneath him at the stallionly scent that filled his nostrils.

Thunderlane grabbed Rumble and pulled him into a deep, loving kiss as soon as they entered the clearing. The shade of the trees above them did little to cool their bodies as the colt opened his mouth to allow his brother to force his tongue deep into his maw, eagerly exploring the inside of his mouth. He sighed into the kiss as he felt his soft lips against his own, he never grew tired of the sound of his brother’s desperate whines as he teased his mouth.

Breaking the kiss, Thunderlane panted as he stared at the colt with lust-filled eyes, a blush spreading across his face to match the trembling colt’s own reddening cheeks.

“I-I wanna use your slutty little ass, little brother~” Thunderlane teased, sitting on his rump and showing off his erect cock. “Go ahead and lube it up for me, won’t ya~” he commanded, prompting the little pegasus to eagerly drop to his stomach, licking his lips as he watched beads of slippery pre dribble down his older sibling’s shaft.

Grabbing his head, Thunderlane forced the tip of his cock past his brother’s lips. “It’s not gonna suck itself~,” he said as his brother whimpered at the sudden motion.

Rumble closed his eyes and opened his mouth, pushing Thunderlane’s member deeper into his mouth. The stallion groaned with pleasure as he felt his hot, wet tongue lap at his tip and clean the pre that had coated his length.

He thrust his hips upwards, eliciting a cute squeak of surprise from the colt as the tip of his stallionhood penetrated his throat a little. Rumble quickly adjusted, groaning as he began bobbing up and down on his cock, pushing it deeper with each bob.

Thunderlane let out a soft moan as he hesitantly pulling his brother’s muzzle off of his twitching shaft. “Don’t get too over-excited, I wanna fill your rump, remember?” he asked, making his brother bite his lip.

Chuckling softly, the older stallion effortlessly picked up his brother and spun him so that rump faced him. Lifting his tail, he leaned in and pressed his tongue to the little pucker before him.

Rumble eagerly raised his flank high into the air, letting his brother grab his cutie marks and push his tongue deeper into his tailhole. His cock twitched below him, strands of his clear pre cum dripping to the grassy ground below him.

“Mmph, you always taste so good, Rumble~” he cooed, making the colt whine as he pulled his tongue out, planting a light kiss on his hole.

“D-Don’t stop!” Rumble complained.

“So impatient, little brother!” Thunderlane teased, getting to his hooves and placing his forehooves on either side of his lowered head. His saliva-coated cock pressed at Rumble’s entrance, making him gasp as his flare teased his tailhole. Squirming beneath him, the foal quickly rotated the lower half of his body to brace his small hind hooves against his brother’s barrel, exposing his throbbing colthood.

“I suppose we’ll just have to give you what you want!” the black stallion growled as he thrust hard into his brother’s ass, making Rumble moan with pleasure grunt in pain as the cock split him open.

Pushing all the way up to his medial ring, Thunderlane panted and groaned as he felt his brother’s tight ass clench around his member.

Rumble’s tongue hung from his mouth as his eyes became unfocused and his hooves twitched at the immense pleasure rolling through his body.

“I-I’m gunna start moving now~” he whispered, slowly starting to pull out of the tight hole before thrusting himself back inside roughly. His panting and grunting got louder and louder as he rutted his little brother’s tight ass, pushing deeper and deeper with each thrust.

Each of Rumble’s moans and squeaks of pleasure filled the stallion with pride at how well his brother was taking his cock, pushing him even closer to climax every time one of his angelic sounds of lust slipped past his lips.

It didn’t take long for Rumble to reach his peak. The feeling of his brother’s cock buried inside him combined with the oh-so-arousing fear of being caught quickly pushing him over the edge as his cock spewed his milky cum onto the grassy ground below him. He lost all sense of inhibition as he threw his head back and screamed with ecstasy.

His tailhole got even tighter, shooting a wave of pleasure through Thunderlane’s body and quickly bringing him to his own earth-shattering orgasm. Cum flooded the colt’s insides, sloshing inside him before dribbling down his flank and pooling on the ground.

They stayed locked with each other as they rode out their orgasms, Rumble desperately grinding himself on his older brother’s shaft as the warmth of his cum spread through his body. Thunderlane humped erratically at the grey pegasus’ cum-stained rump, loving the feeling of his flank milking him for his seed.

After a while, the two flopped to their sides, their cocks softening as the last of their spunk dribbled from their twitching tips and widened holes. Thunderlane pulled Rumble into a tight, loving hug.

“Urf, I needed that~” he groaned, panting softly.

“M-Me too~,” the little colt said between pants.

“I love you, Rumble,~”

“I love you too, Thunderlane~”

Rumble softly fell asleep, his energy drained after playing in the hot sun all day and having Thunderlane’s cock forced into his flankhole.

His brother stood and slowly used his tongue to clean his whitened flank before lifting him onto his back and making his way back to the picnic blanket.

Cloudchaser smiled at him as she saw him emerge from the clearing, having woken up at some point while they were rutting.

“What happened? I heard screaming?” she asked, a hint of worry in her voice.

“Nothing, he just got scared by a bee is all. He passed right out, silly little thing!” Thunderlane lied.

“Oh, I’m glad he wasn’t hurt, I’d feel terrible! What were you two doing back there anyway?”

“Just some brotherly bonding, colt stuff.”

Cloudchaser giggled, “Sounds like you had a fun afternoon, then!” she said.

“Yep! How’d you sleep?”

“Well! I feel totally refreshed, crazy what a day in the sun can do for you! Should we get going?”

Thunderlane nodded, “I don’t think he’ll be up to playing much more.”

Cloudchaser quickly bounced to her hooves, folding the picnic blanket and packing away the leftover food.

Thunderlane swore he saw a wet spot where she was sitting, and that her hoof was slightly damp, but he didn’t get enough of a look to see as she folded the blanket far too quickly.

Must have been my imagination… He thought as they trotted home in the late afternoon sun, a fun day had for all.