An Explosive Combination

You felt a light tap on your shoulder and you blinked awake. It was Sunday, and the day's sun was streaming in through the crooked blinds of your mother's bedroom window. You had slept naked and it had been a cool night. But you were still sweating uncomfortably with her still sleeping naked on top of you. Though your erection had gone softer after cumming the night before, she had fallen asleep on top of you without pulling out. And now your morning wood was firmly hilted balls-deep inside her.

You squinted in the light and focused your vision, looking up at Apogee leaning over you with an expression of irritation. She pointed at her phone insistently to show you the time, as if the sun wasn't already indication enough of how late it was you had slept in. She silently made a motion with her hand for you to 'get going'. She stood up and turned around to go back out into the trailer's common area to lay down and pretend to still be asleep in her bed.

You cleared your throat. "Uh, Mom?" you asked quietly, giving her a little shake to wake her.

She winced and made a plaintive little moan as she stirred awake. You felt her body tense and you could feel her vaginal muscles grip your dick as she moved to stretch. Her wince turned into a pleased smile as she gave you a hug, pressing her tits against you chest harder as she rolled her hips playfully, moving your erection inside her.

As much as you wanted to just let her keep going, you had promises to keep. "Mom, come on, it's late," you whispered. "We have to get up before Apogee sees us."

Speaking you sister's name seemed to sour her mood. Her smile faltered slightly, knowing that you were right. She shifted herself to get her arms under herself and sit up. She didn't move from your lap as she sat upright, keeping the full length of your dick inside her. She held your hands, lifting them up to her chest.

"Here, hold these for a second," she said. You grabbed her tits, with her puffy nipples in your palms. She grabbed your hands again. "No, like this." She moved you hands under her breasts to lift them. She grabbed the sheet to wipe the sweat from under her boobs. Then she properly stretched out her arms as she leaned back. Your morning wood had about as much flexibility as a piece of rebar.

You winced as you felt her try to bend it with her, but it stayed where it was. She audible grunted and put her hand over the obscene bulge that your dick was making in her abdomen. Her eyes glinted with mischief as she rubbed the tip of your dick through her belly, but you pointed behind her through the doorway at the other mare 'sleeping' in the next room.

She frowned in disappointment and steadied herself to stand up. Your erection pulled out of her with a wet shlorp followed by a massive gush of your trapped cum splattering onto the fur of your belly. Before you could ask "What the fuck!?", your cum was followed by a loud noise that was totally not a queef, and if you ever called it a queef, Delta would slap your face right off your head, how dare you!

"How is there always so much?" she asked as grabbed one of her slightly-dirtier dirty shirts from the pile and she quickly wiped herself, before tossing it onto your belly for you to attempt to soak up the mess with the paltry rag. You wiped as best as you could while your mother stepped into her shorts and fished around for her slightly-less-dirty dirty shirts. You finished as best as you could by the time she was dressed, but your belly looked like it had been plastered with hot glue. If it dried, you were worried that you were going to have to shave it.

"I need a shower," you groused as you grabbed your shorts and pushed your way past her. Your hard dick led the way as you walked naked to the bathroom. Apogee did a poor job of not peeking. You turned on the shower water and quickly set to work with some soap and the brush to get as much of... yourself, off of yourself.

The bathroom door opened and Delta walked in, dropping her shorts to sit on the can. While she went, her head turned slowly to look at you, looking at her through the plexiglass shower door. "Relax, it's just number one." Her gaze drifted lower to your erection, still standing very hard, bobbing in front of you while you scrubbed your fur. She cleaned up and flushed before giving you another look. She licked her lips and winked at you before she pulled up her shorts and left.

You finished scrubbing and turned the water temp down to cold until you got yourself under control. You got out, dried yourself, and dressed. Exiting the bathroom, Delta was standing at the kitchenette counter with a cup of tea. It was obviously Moon Tea, the only kind she tolerated. Apogee was sitting in the day-mode dining booth scrolling through her phone, and giving you some serious side-eye. Delta finished her tea and walked into her bedroom. She dug through the mess on the floor to find a couple of duffle bags and she started stuffing every bit of clothing and linen into them.

"Are you going camping?" you asked.

"Laundry day," she answered flatly.

"You actually wash your clothes?" Apogee asked.

"Hardy fucking har!" Delta huffed. "Are you working on your tight five for the Cloudsdale Comedy Club!? Yes, I do occasionally wash my fucking clothes. I'm just smart enough to not go to the laundromat every week, and wait until they're actually dirty, to save money for what's actually important."

"Like beer?" you muttered, gaining a glare from her.

You sat down next to Apogee in the booth while Delta finished packing and picked up the two bags.

"Alright. This should only take a couple hours," Delta said. "Then when I get back we can figure out some kind of lunch, okay?" She didn't expect or wait for an answer before she walked outside and took off. You and Apogee leaned over to watch through the window as she left.

After about a minute you sighed. "Listen, Gee, I'm sorry about last night..."

"Well, you can start making it up to me immediately." She hopped up from the booth and yanked down her shorts.

"Gee, come on, I haven't even had breakfast."

She sat up on the table in front of you, with her legs on either side of you. She grabbed a handful of your mane and looked you in the eyes, unable to keep the grin from her face. "Breakfast is served," she said before pulling your face into her crotch. You managed to take a deep breath before she locked her knees together behind your head.

This is your life now...

"That place is a fucking racket, I tell ya!" Delta complained as she walked into the trailer with her bags. "If I was running that place I'd already be rich with those prices!" She looked back and forth between the two of you. Apogee was playing on her phone, sitting upside down in the booth where you left her when the two of you finally finished. At least she put her clothes back on. Meanwhile, you were in the kitchen, eating a handful of plain bread slices after you ripped the fuzzy green bits off, and drinking a carton of orange juice trying desperately to rehydrate. "Is that lunch?" she asked. You nodded.

"Also we finished the pizza," Apogee said.

"Fine. Easier for me," Delta said, carrying her bags into her room to stuff her clothes into her dresser drawers. Apogee gave you a pointed look.

"Uh, so anyways, I'm heading out," you said.

Delta perked up immediately. "What!? Where? Why!?"

"It's the weekend," you explained. "My friends and I are meeting up at the arcade. Then we'll probably catch a movie afterwards. I probably won't be back until later tonight, so I'll get some kind of dinner while I'm out."

"..."

"Is that not okay?" you asked.

"Yeah!, I mean, no, it's fine. Why should I care!?" Delta said, shoving her clothes into her dresser a bit more forcefully than was explicitly necessary. "You're a grown-ass stallion. You can do what you want!"

"Oh...kay..." you said, giving Apogee a nervous look before you walked out of the trailer. You walked out to the edge of the junkyard as loudly as possible, tossing bits of metal at other piece of metal while singing off-key about cleaning up winter until you flew away.

That was the plan, after all. For you to go to the arcade all day so Apogee could shoot her shot with Delta. You already knew that your mom didn't have a problem with doing it with one of her kids. And you knew her barn door swung both ways. And you knew first hand just how... persuasive Apogee could be with this sort of thing. All she needed was the opportunity to be alone with her. And that was why you were going to be gone all day at the arcade, so she could get down and dirty with Mom.

Like hell you were going to miss that!

You circled back around and glided silently into the back side of the junkyard and walked even quieter across the sand towards the back of the trailer to the strategically-placed crate near the trailer's small vent window. Staying low, you just barely peeked over the corner as you eavesdropped.

Apogee walked over to Delta's bedroom doorway. "Hey, Mom, do you need help?"

"No!"

Apogee rolled her eyes. Delta had always been too proud, too stubborn to ever admit that she needed help. "Right. I meant, would you like some help?"

"I can put my own laundry away!"

"Okay, but... I'm just saying, it might fit better if you folded them."

Delta threw her bag on the floor. "Do you want to fucking do it!?"

"I mean, I was offering..."

Delta threw her hands up. "Fine, knock yourself out!" She stormed out of the bedroom and opened the fridge. "Fuck, I forgot to pick up beer!"

"I could text Aileron to pick up some on his way home," Apogee offered.

You quickly scrambled to silence your phone in you pocket.

"Sure, whatever," Delta grumbled.

Apogee walked into the bedroom and carefully pulled the crumpled piles of clean clothes back out of the drawers to sort them and start folding. "Is everything okay?"

"It's fine!" Delta insisted.

"Was the laundromat really that bad?" Apogee asked as she folded some denim work pants. "Because you seemed like you were in a really good mood this morning."

Delta huffed.

"I just mean, you were practically glowing," Apogee continued. "What happened? Did you meet some cute young stud at the bar last week while we were at school?"

"No! It wasn't like that. I mean, it's not like that! It's nothing! Can't I just be in a good mood!?"

Apogee shrugged. "Sure! It just seems... eh, uncharacteristic?"

Delta visibly bristled and sucked in a breath, clearly ready to spew some kind of vitriol in retort... but it never came. Her entire stance relaxed and her shoulders softened. "... Really?"

Apogee winced. "I mean... kinda, yeah. You're usually pretty... caustic." Delta sat in the kitchenette folding chair just outside the bedroom doorway. She looked... deflated. What Apogee was saying was nothing new to her, but it was still a hard pill to swallow. Especially from her, little miss infinite positivity.

"You know... I wasn't always like that," Delta said. "I've just... been through a lot of shit over the years, you know? My rocket for EASA was my one big chance! And Jet stole it! And ever since then, it's been tough. So I had to get tougher. I had to, to survive!"

"I know."

"No, you really don't! And I hope, to whatever powers that be, that you never have to. It's exhausting, you know? It's not easy being a cast-iron bitch all the time! It takes discipline, and years of training..." Delta wiped her eye. "A lot of people don't appreciate that."

"I do know, Mom," Apogee said. "Do you think that this family, this childhood, this... life of mine is the life of my dreams!?" That gave Delta pause. "Look, I'm not going to stand here and pretend like I have it any harder than you do. But don't act like I'm not going through this shit too, and carrying all this stress, just because I wear it better than you do! I smile and stay positive because I don't want anyone else to have to feel this bad! I get that your life sucked! I get that you're angry, and that you hate Dad! You make that abundantly clear ALL the time!" Apogee wiped her nose. "I just don't understand... Why do you hate him so much more than you love me!"

Delta recoiled as though the words had physically slapped her in the face.

"Apogee... I... I don't. I do hate him, a lot. But... not more than I love you." Apogee gave her a dubious expression. "I... know I haven't been doing a good job of demonstrating that. But... I am trying. I'm trying to be better. Trying to be a better person. A better mother to you. To both of you. You don't deserve-" Delta swallowed hard. "This life, my life isn't your fault. And it's been unfair of me to take it out on you for what Jet did just because..." Delta cut herself off.

"... Because we're the result of it?" Apogee finished.

Delta purse her lips. "I was going to say, a reminder of it. But yeah. Just the same, I wish... I wish I knew better, back then. I wish I had the chance to be better... to be a better mother at least. Jet didn't steal that chance. I... I was the one who threw it away."

Apogee walked over and hugged her. "You're trying."

Delta hugged her back. "Yeah. I'm trying."

"..."

After a minute, Delta broke the embrace. "Alright, enough of this namby pamby crap." She shook herself off. "I can only tolerate it in small doses."

Apogee smiled. "Baby steps."

"Yeah, yeah." Delta pointed at the bedroom. "Anyways, I think you were doing some chores for me?"

Apogee smiled bigger. "Right!" She went back to folding Delta's laundry and putting it away neatly in the drawers. The pants, shorts, shirts, and maintenance coveralls. Then it was the 'bumming around the house' clothes; whatever passed for her pajamas, gym shorts, and undershirts. And then... Apogee lifted out one of her mom's bras. She put the straps over her shoulders without clasping the back.

"Playing dress-up are we?" Delta teased from the kitchen.

Apogee looked down at the massive cups of the bra. "What's it like to have boobs?"

"You have boobs," Delta said.

Apogee reached under her mom's bra to cup her small chest in her palms. "No, I have... a chest. Not boobs. Not like this!" she said, cupping the massive bra with her hands.

"The grass is always greener," Delta muttered.

"What do you mean?" Apogee asked.

"The grass is always greener on the other side of the fence," Delta clarified.

"I know the expression! I meant how it applies to this context."

"You think bigger boobs are better. I thing the reverse it true," Delta said.

"But I thought bigger boobs being better was a universal fact."

"Ha! Yeah, according to guys, and girls like you," Delta said with an accusatory point of her finger. "You're not the one that has to carry them around all day."

"But don't you get like, free drinks and stuff?" Apogee asked.

Delta crossed her arms. "Ain't nothing in this world for free, Apogee. If you don't listen to anything else I say, remember that! Oh sure, these girls will get you attention and gifts. And it might seem great at the time, but all that comes with a price eventually. You understand where I'm going?"

Apogee nodded. "Yeah, I get it. Men are pigs."

Delta sighed. "Not all men. But the ones who are only looking to get their greedy paws on a big rack? Yeah."

"... How do they feel?"

"Heavy!" Delta answered quickly.

"No, I mean like," Apogee squeezed the empty bra. "What's the appeal?"

"Fuck if I know. Why do you ask?"

Apogee shrugged and blushed. "I'm just curious."

Delta tilted her head. "I never took you for a fillyfooler. I thought you had a colt friend there for a while."

"I did, kinda for a little while, but we never... did anything," Apogee said.

Delta put her hand up. "Hey, I'm not your father. Whether you did or didn't do whatever is all you. I'm not trying to police you. Fillyfool all you like. I don't recommend it. Girls are more trouble than they're worth in my opinion. That's why I usually prefer studs." Delta looked away wistfully and smirked. "Usually."

"But sometimes?"

"Hey, I don't own a double-ender for the stallions, you know," Delta said with a coy smile, watching Apogee blush and look down at the empty bra cups in her hands. "So you're curious to know what a real pair feels like?" With uncharacteristic shyness, Apogee didn't meet her eyes, but just nodded meekly. Delta wavered a bit, as though debating in her mind. "Fuck it. You were breast-fed." Delta waved her over.

Apogee's eyes went wide. "Wait, what!? Really!?"

"Yeah, come on! Before I lose my nerve!" Apogee walked over with her hands out, and jaw slack like a zombie. "Take that stupid thing off first! You look ridiculous!" Apogee quickly discarded the bra and then walked over with her hands out again, stopping barely an inch away from her mother's chest. Delta rolled her eyes. "Come on, don't make this more awkward than it already is." She grabbed Apogee's wrists and mashed her palms into her breasts.

"Squishy!" Apogee said with a goofy smile. Her hands groped and her fingers felt around until she felt the nubs of her nipples, working them between her finger and thumb.

"I shouldn't have to explain to you that nipples are sensitive."

"Yeah!" Apogee curbed her pinching enthusiasm and moved her hands under them to lift them. "Yeah, they are heavy."

"Doesn't my lower back know it," Delta groaned. Apogee moved swiftly behind where Delta was sitting and reached around to cup her breasts again and lift them. "What? Do you want an internship to carry them?" Delta asked. Apogee lifted her breast and lowered them, feeling their weight, and hiking up the hem of her shirt. She lowered her hands down to Delta's bare belly and lifted them to cup the underside of Delta's bare breasts. "Okay, that was smooth. Obvious, but smooth."

"Did you want me to stop?" Apogee asked.

"I didn't say that."

Apogee moved her hand up under Delta's shirt, finding her nipples again and resumed playing with them. Delta waited patiently with mild amusement for the novelty to wear off. That time never came.

"I can see why guys like these!" Apogee said, kneading her mother's tits like she was making bread. "You said I was breast-fed?" Apogee asked.

"Yeah."

"I wish I could remember that..." Even from where you were sitting outside you could hear Apogee lick her lips. Delta just shook her head, grabbed the hem of her shirt, and pulled it up over her head. "Uh..."

"Look Apogee, you're not as slick as you think you are. And if I wanted to play games I'd have gone to arcade with your brother. So don't dance around the bush if you want something."

"So can I..?"

"Yeah." Apogee grinned and move to kneel in front of Delta, leaning forward to suck one of her nipples while her opposite hand played with the other, before switching to do the same to the other. Delta's maternal hand gently held Apogee's head against her breast as she suckled.

Apogee's hand that wasn't full of boob rested on Delta's thigh. Despite being told to the contrary, she tried to be as slick as possible as she slid it up her leg, into the leg of Delta's shorts. To her credit, she mostly succeeded with Delta being so distracted. But no amount of nipple sucking could stay Delta's notice of Apogee's thumb grazing her pubic fluff. She grabbed her wrist through her shorts. "What do you think you're doing?"

Apogee looked up at her with her mouth full of areola. "Um... stealing third base?"

"Yeah, almost. I think this has gone far enough. You know how my boobs feel now, so why don't we just-"

"Please!? I've never gotten to third base with a girl!"

"Okay, first of all, begging is not sexy," Delta said. "And second of all... wait, what!?"

"Well, I mean, I kinda got to third base a little bit with my hand, but she didn't want to... do that with me."

Delta snorted. "I'm not surprised. Girls your age... most girls your age don't know what you want. That's why when I'm craving... that, I prefer mares my own age. Because you might talk big game, but once you finally get down there, face-to-folds, you suddenly realize that you were straight all along and you just now found out! And then I'm left in the lurch, all worked up from some little cunt-tease again!"

"I wouldn't do that to you."

"Uh huh. Promises, promises."

"I'll prove it!" Apogee's other hand grabbed the hem pf Delta's shorts.

"Slow down, kid! Fuck, you're like a horny little colt champing at the bit to get his dick wet. Let me at least go freshen up. I was sitting on a washing machine in spin cycle for like an hour and I'm a little..."

"I can tell." Apogee's wrist squirmed in Delta's grip and her thumb grazed the top of her very damp pussy. "If it makes it fair, I've been pretty worked up thinking about this, too."

"How long have you been-" Apogee grabbed her mother's other hand and pulled it into her wet crotch. Delta yanked her hand away. "For fuck's sake, Apogee, you could drown a foal in those shorts! How is your estrus this bad? Haven't you been taking your Moon Tea?" Apogee nodded. "And it's still this bad?" Apogee bit her lip and nodded again.

Delta let out an exasperated sigh. "Alright. Bedroom. Go." Apogee damn near did a backflip as she bounded into the bedroom and bounced on Delta's mattress.

~
Outside, you quickly, but quietly, darted around the outside of the trailer to the watch through the bedroom window.
~

Delta walked past Apogee to look in her closet. "I would never share, normally, but lets see if we can find you something in here for you to be able to deal with yourself." Delta dug out her 'toy' box.

Apogee appeared beside her in a flash. "You said you had a double-ender, right?" She didn't wait for an answer before she reached in and grabbed the longest pink thing she saw. Indeed, it was a floppy, silicone double-headed dildo.

"I think that's a little advanced for the first time," Delta said. "Why don't you start with-"

Apogee grabbed an oblong box. "Clone A Willy?"

"Uh, yeah, that's a kit you can use to make a mold of... a dick."

"So whose-" The bottom of the box gave out and a thick, beige, rubber dick landed in Apogee's lap. The base of it had the initials J.S. on it. "J. S? Who is..." Apogee's eyes lit up like fireworks. "Jet Stream!? Is this Dads!?"

Delta grit her teeth. "Yeah."

Apogee looked over every veiny detail of it, feeling the heft of it in her hands. From where you sat, it was hard to make an accurate comparison. But by the looks of it, like yours, it was nearly the size of her forearm. You seemed to have inherited your father's best traits.

Apogee looked at Delta, "But if you hate Dad so much, why would you keep this?"

"The same reason why all lesbians own dildos!" Delta said. "I like this penis. I just don't like the DICK it's attached to."

Apogee chuckled but continued to stare at it. "I wanna try it!"

"Apogee, don't make this weirder than it already is!" her mother said, still topless.

"Well what else do you..." Apogee fished around in the box and pulled out a strap-on harness. She grinned and held it up next to the Clone dildo.

"I am not fucking you with your father's dick."

"Okay, how about if I wear it first instead?"

"You're not doing that either!"

"You're such a prude!"

"You little shit. Fine, you think you can hang? Let's go. Sit on the bed." Apogee got back on the mattress. "Turn around. Face the wall." Apogee turned around, facing away from her mother. "Take off your shirt." Apogee giggled as she threw her shirt off. Delta sat down behind her.

"If you're back there, how are you going to see my-"

"Close your mouth, and close your eyes," Delta instructed. Apogee did as she was told. Delta moved closer and Apogee reached back to touch her breasts again. "No. Keep your hands to your sides."

"What are you doing?" Apogee asked.

"Mouth closed. I'm not telling you again."

Apogee shut her mouth and stayed silent as Delta placed her hands on Apogee's back. She moved slowly over the contours of her muscles. She traced her fingers down along her sides, over her ribs, getting a stifled giggle from Apogee. Delta worked her hands back up again to the middle of her back at the base of her wings. She moved her fingers up along the leading edges and back down again. She gave each of her primary feathers a light tug as though she was preening.

Apogee shifted anxiously in her seat. Behind her, Delta loomed over her, leaning in closer has her hands continued to work on her back and wings. She breathed forcefully against the back of Apogee's neck and her scalp, making her feel her hot breath. Apogee continued to squirm, as though she had an itch somewhere she couldn't reach. But Delta clearly knew where it was as she kept up her work. Apogee stifled her moan through her teeth. It came out as more of a whimper that rose in pitch with each passing second as her hips started to practically vibrate.

In a flash, Delta wrapped her arms around her and pulled her tightly into her lap. She cupped her pert chest with her hands, giving her stiff nipples the lightest of pinches as she nibbled ear with her teeth. Apogee let out a shriek that she could not keep in as her whole body trembled and shook. Fresh wetness soaked her shorts, and Delta's lap. One could be forgiven for thinking that she had been genuinely scared or tickled to the point that she had properly wet herself. But it was not the case.

Delta let her go at last and Apogee flopped forward. Delta just smiled at her. "Don't discount second base. I barely touched your nipples and you went off like a sprinkler!"

Apogee rolled over and grabbed at her shorts with arms that she could barely feel as she tried to wiggle and crawl out. When she was finally able to get her shorts down past her knees, she got one leg out and kicked them off at Delta with decent aim.

Delta grabbed Apogee's wet shorts out of the air. "You're pretty damn tenacious, kid, I'll give you that." Apogee grabbed her thighs and pulled her knees up to her chin. "Fine. You want to go for a ride on Delta's O'Coaster? You better hold the fuck on." Delta leaned down close to look at Apogee's tight little pussy lips. "Ah, youth." She grabbed her hips and wasted no time diving in, giving her a long lick up and down before shoving her tongue inside. Delta sat up for a moment and smacked her lips, tasting Apogee's flavor.

"What's wrong?" Apogee asked self-consciously.

"Never did anything with your colt-friend, huh?" Delta mocked. "You're definitely not a virgin."

"What? How do you know?" Apogee asked.

"Virgin pussy tastes different."

"How many virgins have you had!?" Apogee asked.

Delta waved her hand. "Okay, virgin in the strictest sense of the word. But I've had a lot of gold-star fillyfoolers."

"What does gold star mean?"

"It means that they've never had a dick inside them that wasn't made out of plastic. You see, the first time you get cream-pied, the hormones change your... local chemistry and it tastes different. So congratulations. And you're not pregnant, so you obviously did something right."

"Great. Thanks for the five-star review, Mom."

Delta leaned in again to continue licking Apogee's pussy. Knowing that she had taken a dick before made her much less nervous about adding a couple of fingers into the mix. She took her time, teasing her slowly and then backing off. Then she went back in again, elevating her pleasure before slowing down again at the last moment. She let her hand do the work for a bit while she just enjoyed the sight of Apogee's tight little snatch stretch around a third finger. Her lithe body was at her complete mercy as she shifted anxiously trying to get herself to a peak that Delta kept denying her.

"This is fun," Delta teased as she continued to plunge her fingers in and out of Apogee. "Usually the only mares that'll bother with me are just as old and bitter about stallions as I am. It's convenient that they usually know exactly what they want and they pretty direct about it. But I have to admit, it does make things... eh, maybe not boring, but... predictable?"

Apogee's only reply was a stunted series of moans and little squeals.

"And most of the gals that have been career dykes usually have stuff that makes it had to compete with," Delta continued in between giving Apogee's winking clitoris little kisses. "I mean, I'll go home with them from the bar, only to find some two-thousand bit pneumatic fuck machine that looks like it belongs in an industrial assembly line. But with you, with this..."

Apogee whimpered as Delta rotated her wrist to start making little curling motions with her fingers inside Apogee's vagina. "All it takes me is three little fingers to turn you into a puddle." Delta smiled before slowing down again. "It's refreshing."

Apogee's whimpers became more plaintive and desperate. "M-Mom, please?"

"Well, since you asked so nicely..." Delta curled her fingers inside her again, faster and harder against that special spot, building that pressure back up even faster than before. Apogee's whines turned into high pitched moans, and then a deep moan as her whole body tensed in the final moment. Delta could read her like a book and she planted her mouth on her pussy, cupping the rest of her vulva with her mouth, sucking and lashing her winking clit with her tongue.

Apogee's moan turned into a scream as her hips bucked up into Delta's mouth. Delta's other arm wrapped around Apogee's thigh and held on. She didn't let up while Apogee came hard into her mouth. Delta just held on for the ride and kept making lewd slurping noises, swallowing what she could while the rest dribbled from the corners of her mouth until Apogee's body finally fell limp. Delta slowly released her from her arm and mouth and gently slid her fingers out, getting one last little whimper from Apogee. Delta sat back on the mattress and admired her glistening fingers, sticky with her daughter's marecum.

Apogee recovered slowly, and sat up in the wet spot she had made on the mattress. She looked at the topless mare sitting across from her. Delta smiled at her and licked her fingers clean, savoring the delicious meal. Though she was still wearing her shorts, she sat with her legs slightly ajar. She followed Apogee's eyes down to her crotch and smirked. "All yours." Apogee gave an exasperated sigh. "I mean, unless you're going to be another little cunt-tease," Delta razzed.

"I told you I'm not!" Apogee said defensively. She crawled across the mattress on her hands and knees and grabbed at Delta's shorts legs. Delta lifted her butt just enough for Apogee to pull them free and off her legs. Delta leaned back on her elbows to let Apogee admire the view.

Apogee had looked at herself in the mirror plenty. She looked like she had been carved from marble with barely an ounce of fat on her. Her toned muscles had striking definition. It made her look hard.

Her mother, on the other hand, looked soft. Delta was a strong mare, no doubt. She had the ropey muscles of a working mare, but they were hidden beneath her voluptuous figure. She had never really lost all of her pregnancy weight, but she wore it well around her midsection, and in her thick thighs, and a very comfortable-looking ass. And her breasts had only gotten bigger since her breast-feeding days.

Apogee moved between her mother's legs trying to not look nervous. Like the rest of Delta's body, her pussy looked invitingly plump. The teal tuft of her pubic fluff rested just above her smooth vulva. Apogee reached out with her hand to place her palm against it. Apogee extended an experimental finger, sliding it inside, then another. She reached the milestone she had with Dizzy. She started sliding them in and out nervously. "Oh, you can do better than that!"

Apogee had always been a small filly. Short, even among her classmate peers, much to her irritation. Even when you called your little sister fun-sized as a term of endearment, it still triggered her short-mare complex. By contrast, Delta was practically a mountain of a mare. Not that she was that much taller than the average gal, but standing next to little Apogee, who barely made it up to her shoulders, she was practically Amazonian. And now it was even more apparent. Delta's thick fingers had felt massive inside Apogee. But even with Apogee's fingers spread out, her hand couldn't cover all of Delta's vulva.

Apogee added a third finger, then a fourth just to try to get a reaction out of Delta other than arrogant sass. "I'm pretty sure you're the smallest girl I've been with. I'm actually kind of curious to see just how many fingers you can get in there." Apogee shifted her shoulder a little to get a better angle as she worked her thumb inside.

"That's all of them," Apogee said proudly.

"Keep going! Deeper!"

Apogee nervously pushed her fingers and thumb deeper inside her mother's pussy. You watched with morbid curiosity as it managed to stretch to the widest part of her hand. Delta actually started to audibly pant. Slow second crawled by as the suspense kept building, until...

"YES!" Delta gasped as Apogee's hand popped inside and her vaginal muscles closed around her wrist. "Keep going! Deeper!" Apogee worked her hand deeper inside with little thrusting motions as more of her forearm vanished inside her mother's vagina. Now it was Delta's turn to lose her focus as her breathing became ragged and punctuated by throaty, whorish moans as you watched inch after inch of your sister's arm sliding inside. Delta was just laying there and loving it by the looks of it.

Suddenly Delta lurched upright and clutched her belly. "Okay, hold on," She winced. "You hit the end there."

"Are you okay?" Apogee asked nervously.

"Yeah. It just felt like a little cramp." She breathed. "Okay, just... close your fingers so you don't bump into that again." The bulge in Delta's abdomen shifted for a moment as Apogee made a fist inside her. "Okay, keep going," Delta panted.

Apogee had just enough clearance to get in up to her elbow. "That's it," she said. Delta looked down between her legs to where her daughter's pale-yellow arm was buried inside her.

"F-fuck that hot! Okay, go!"

"Go what!? Where!?"

"For fuck's sake, Apogee, do I have to spell it out for you? Fuck me!"

Apogee moved her arm in and out like a stallion's penis, making small, slow motions at first while Delta laid there and played with her tits, pinching and twisting her nipples. "Come on kid, I'm not made of glass, I can take it!" Apogee adjusted her stance to give herself some more leverage as she really started to put her muscle into it, moving harder and faster against her mother's snug grip on her arm. "Maybe we need to get you a gym membership or-" Apogee expression shifted into serious determination and she flexed her wrist, making the bulge moving inside in Delta's abdomen more pronounced. "OoOH!" Delta grunted and put both of her hands over her belly. "Okay, fuck! Whatever you're doing..." she panted, "Keep doing it!"

Apogee fisted her mother just as fast and hard as before. Delta kept one hand over the protruding bulge in her belly and her other hand moved to finger her clit. "Yes, YES!" Apogee started to roll her wrist around in small circles inside her mother vagina. "Oh, fuck! No stallion's dick can do that!" Apogee got into a rhythm, fist-fucking her like a well-oiled engine. Delta's finger's were a blur on her clit.

Delta's entire smug persona vanished. She actually looked... worried as she watched the smaller mare wear her on her arm like a damn sock puppet. She was entirely at the mercy of Apogee's fist, elbow-deep inside her, making her feel all kinds of things. She looked vulnerable, but it was tempered by her trust that Apogee would never do anything to hurt her. She wasn't some one-night floozy that would kick her out when she sobered up the next morning.

She loved her.

"F-FUCK!" Delta screamed and her hips bucked up into the air. Her back arched to the point of looking like a scene from a horror movie. Her pussy clenched and spasmed, gushing a powerful jet of her marecum practically up Apogee's nose.

Apogee tried to move out of the line of fire, but she was trapped. "Mom!" she tried to say, but only managed to get Delta's next squirt into her open mouth. Delta's hips were practically levitating as she kept cumming, spraying Apogee in the face again and drenching her mane. Apogee yelled, "Mom, stop!"

"YOU STOP!" Delta cried between the throaty moans of her orgasm.

Apogee tried to pull her arm out, but it only made Delta squirt her in the face harder. "LET GO!"

"I can't!" Delta cried, cumming just as hard as ever. "Stop moving!" Apogee relaxed her arm as Delta's pussy flexed and squeezed and squirted until she was completely empty. At last, her legs went limp and her butt flopped back onto the mattress, pulling Apogee down on top of her as Delta's entire body trembled.

"You okay?" Apogee asked. Delta nodded weakly. Apogee tried to pull her arm out.

"Ooh, easy, it's still sensitive. Just wait a minute."

"Um, okay." Apogee laid there with her arm trapped up to her elbow inside her mother. She tried to keep her arm as still as she could while Delta's vagina continued to quiver and squeeze around her in orgasmic aftershocks. They both laid there, panting together for a few, long minutes.

"Okay," Delta panted. "Try now. Gently."

"Okay." They both held their breath as Apogee applied just barely enough tension to pull her arm out excruciatingly slowly.

"Ooh, ohh, oooh!" For a mare that had given birth to twins, Delta still whimpered like a little filly with a skinned knee as her vulva started to bulge and stretch at Apogee's wrist.

"Almost there," Apogee said.

Delta sucked a breath and bit her lip with a determined nod. Apogee pulled her hand out of her mother's vagina with a wet shlorp. Delta's yelp turned into a sigh of relief as she cupped her tender pussy with her hand.

"You okay?" Apogee asked again.

Delta nodded and looked at Apogee with half-lidded eyes. "Kid, you know I don't just hand out compliments, right?"

"Yeah, I know."

Delta took another deep breath and smiled. "But that was seriously the best orgasm I've ever had in my entire life."

Apogees face lit up in surprise and pride. "Really!?"

"Yeah. By far!" Delta praised.

That stung a little for you to hear, especially after she had said that same thing to you just the other day.

"So does that mean we can do that again?" Apogee asked.

Delta winced and kept her hand gingerly cupping her vulva. "Not today."

"What about tomorrow?" Apogee asked.

Delta smiled. "We'll see. But obviously we can't be letting your brother know about this."

Apogee chuckled. "Ha! Yeah, I bet if he ever found out, his dick would probably explode!"

"It better not," Delta said before blushing. "I mean HE better not! Find out, that is!"

Apogee wasn't far from the truth. While you were watching them, you had practically turned the outside of the trailer into a Jackson Pollock masterpiece.

Delta looked at Apogee's mane, plastered with mare cum. "Speaking of him, you need to take a shower before he gets home."

Apogee looked at her mother's whole entire body, not the least of which was her damp chin where her own orgasm had dribbled down. "So do you..." Apogee grinned. "That stall has room for two. Wanna wash my back?"

Delta snorted but just stood up to follow her daughter to the bathroom. You scurried back around to the other side of the trailer to watch. Much to your disappointment, the hot water filled the room with thick clouds of steam.

But your ears were treated to the wet and wild sounds of round two.