Three girls and a stallion
"Oh come on, Twilight! We said we were sorry for using that book!" Apple Bloom shouted towards the crystal ball that was placed within the center of the room. "We thought that it was a book on apples!"
Twilight gave her a look of contempt, obviously not buying the story. "The book clearly said that it was a book on how to use archaic magic. It was used twice in the same day. You're lying to me."
"AM NOT!" All three shouted at her.
"Doesn't matter anyway. You're stuck in ponyville until I can figure this out. I'm not like their Twilight afterall. Luckily their Big Mac has agreed to 'babysit' you three until then." Twilight stated. "He also promised that if you three cause any trouble that he will severely punish you so try to keep your grubby hands where they belong."
"Yes ma'am..." The three agreed in unison.
"Okay.. Big Mac, I'll talk to you when I can."
Big Mac simply nodded and walked over to the door leading out to the backyard. "Eeyup. Time for work you three."
Sweetie Belle follows Big Mac, humming a tune in her head. Just as Apple Bloom was about to follow them Scoots grabs her shoulder and forces her into the kitchen.
"Hey what's the big idea-" Bloom had no time to finish as Scootaloo covers her mouth.
"Shush! We don't know who's here..." Scoots whispered to her. "Now-" She removed her hand from Bloom's mouth. "- Are you fucking crazy."
"What?" Apple Bloom said as she folded her arms and pouted. "I really did think that book was about Apples. I didn't know a tentacle monster would pop out and rape all those fillies and mares."
"Not that! You and Big Mac. I saw you two in the barn and naked." Scoots replied. "Are you crazy? What if anyone saw you two??"
"I don't care. Have you seen my brother's cock? There's a reason why they call him Big." Apple Bloom began to drool as her mind wandered to her brother's cock. Scootaloo and the kitchen were a blur to the thoughts of being spread open forcibly by her brother.
"Back to reality you red head slut!" Scoots shouted.
"Huh? Oh sorry! Dammit, another pair of panties ruined..." Apple Bloom walked out the kitchen and towards the stairway. "Tell pony Mac that I'll be back. Have to clean this up."
Scootaloo rolled her eyes and walked outside to where Sweetie was being trained by Big Mac in farming.
"And that's how it's done?" Sweetie asked, tilting her head in confusion.
"Eeyup." Big Mac said as he continued pulling the large rake with his back. "Just put the seeds in the holes."
"Hey Mac! Apple Bloom had to use the bathroom." Scootaloo made her way to Sweetie's side, folding her arms. "She'll be out soon."
"Bathroom?" Mac stopped his raking and looked at the two. "What's a bathroom?"
Sweetie and Scootaloo looked at each other and back to Mac. "Um... don't you guys have bathrooms? You know toilets, sinks, that little rubber ducky?" Sweetie asked.
"Princess Celestia made rules about certain things, including these bathrooms you keep talking about. It just magically disappears."
"So then what is taking Apple so long?" Scoots asked.
Big Mac dropped the rake and stretched out a bit before walking back inside. "You two start planting the seeds. I'll go check."
Scoots and Sweetie did as they were told and Mac made his way upstairs. His eyes quickly catching on that pony Apple Bloom's door was open. He slowly made his way to the room and poked his head out. The room's light was on, some clothes were ruffled on the floor but there was Apple Bloom stripped down with nothing but her bow and those black leather fire proof socks that Applejack wore. But because they were meant for ponies it forced Apple Bloom to get on all fours.
Here perfectly shaved pussy raised high enough for Big Mac to see. And sure enough it was still wet from earlier. Glistening and dripping onto the floor. Big Mac tried not to look for too long but the shape and puffiness of it began to make his cock grow harder. "Damn..." He whispered to himself.
He continued to watch as Apple Bloom tried to trot around like a pony but awkwardly and clumsily fell over, Legs spread open enough for Mac to keep seeing her dripping cunt. "Gosh darnnit!" Apple Bloom tried to get up on her feet but fell on her back. Her eyes now locked on Big Mac's head poking out and looking at her. "Oh crap!!! Did you see all of it?!"
"Eeyup."
"Sorry! I was looking for the bathroom and found my pony version's room and... she doesn't have many clothes." Apple Bloom stated as she tried to get the gloves off.
"We can't afford the clothes she like." Big Mac stated as he walked in, forgetting his cock was rock hard to help Bloom. "Besides her latest cutie mark attempt has her punished and sent to her aunt and uncle Orange's home."
"Oh yeah?" Apple Bloom's eyes got a slight peak at Big Mac's balls as they swayed slightly from his movement. "Oh my~ I mean! What did she do?"
Big Mac removed the first glove off her hands. "She tried to get a cutie mark in sluttiness. Well she did get a mark. A bright red mark." When he pulled off the second glove, he was knocked back onto his side.
"Geezus!" Apple Bloom covered her mouth, blushing wildly at the size of Mac's cock. It was massive, bigger than even a normal horse's cock and his balls were nearly grapefruit size. "How... how can you walk with those things?!"
Big Mac shrugged and got back up. His balls pressed against the hardwood floor and his cock nearly up to his chin. "Easy to walk around. Hard to find a mare who can handle it. Nearly broke Bon Bon and Lyra."
"You're lying. I bet you're not looking because you're afraid of being dominated by someone with experience." Apple Bloom said, nudging him as she grinned.
Big Mac gave her a stern look. "Knock it off. Your friends are waiting and I need to get that work done before AppleJack gets home." As he tried to turn away, he felt two hands grope the parts of his balls that weren't on the floor.
He turned around to see that it was Apple Bloom who was playfully squeezing them. "They can wait. But I need this~" She grabbed his flank and knocked him back onto his side. Quickly pressing her face against his big balls, kissing and licking them before trying to get one in her mouth. All she could hear was grunts and groans from the poor stallion. Her mouth was made for his cock but his balls were much heavier than her human brother's so she had to change her tactic. She gripped his balls again and directed her mouth towards the tip.
Slowly pushing her mouth around the huge flaring tip. She pushed as hard as she could to get it past her tongue. Taking in as many deep breaths as she could before it clogged up her throat. Her little pussy getting wetter by the second. The heat from his balls pressing against her bare nipples made them hard instantly.
"Nngh... hey... quit it! You're gonna choke on it..." He groaned out. But it fell on deaf ears as Apple Bloom continued on. Seven, eight, nine inches in and she could feel the thick member poking at her throat. Her tongue sloshing around on the underside was making his cock throb in pain.
Big Mac tried to pull himself away from her mouth but Apple Bloom kept her hands on his balls, locking him in place. He continued to wiggle and squirm in an effort to break free but each time just seemed to make Apple Bloom try harder.
Her tight throat slowly being stretched open by the flared head. Tears began to stream down her face but not tears of pain, but tears of pleasure. His heavy musk filling her nose and making her pussy burn like a mare in heat. It was wonderful!
"Apple Bloom... if you don't let me go... I'll be forced to punish you!" He groaned out. Thinking desperately to keep her from making him cum. He was so close and they both knew it.
Eleven. Twelve. She soon begins to choke on his cock but she managed to get to thirteen. Her throat massaging the rest of his shaft as she tried to catch her breath. Big Mac finally gave in to Bloom's pleasuring and pressed his hooves to the back of her head. Pushing her, no forcing her to take the rest of his cock easily. His strength was impressive but he was far from done punishing her. Once she got to the base he flipped onto his back and pushed her further down to where his balls were now in her mouth. Her cheeks expanded out to their limits by the warm gallon- filled balls. His cock now nestled happily in her stomach, bulging it out as if she was pregnant. Precum filling her tummy as well.
Mac locked his back hooves around Bloom's head to keep her locked in place. "MMMPH! NGH!" Apple Bloom tried to scream out. Her human brother was never this big. His was huge in his own right but this stallion was making her second guess her decision. She could feel his medial ring rubbing against her throat.
"I will let you go... if you promise to behave!" Big Mac groaned out. The feeling of her throat contracting around his shaft was driving him close to a climax.
"MMMHMMM MHMMM MHHMMM!!!" Apple Bloom screamed out as hard as she could. Her face now red, tears streaming down her face more and her eyes almost rolled back into her head. So close to passing out that Big Mac was nothing more than a blur in her eyes. With her last drawn of breath, she tried to keep down the precum that filled her stomach.
Big Mac released his legs and pulled her off his cock, letting her fall over onto the floor. "Whew..." He looked at her and nodded. "Remember next time you try anything I won't go easy o-"
Apple Bloom crawled over to Mac's shaft once again and rubbed her face against it. Coating her face in his precum.
"Are you trying to get pregnant?" He asked in a low moan.
Apple Bloom looked up at him with her cute redish-orange eyes and nodded. "I dare you!" She said with a cocky grin. Her little hands patting his big balls which still felt like they were full. "Unless you are a chicken!"
Big Mac, still horny and coming down from the feeling of her mouth positioned himself on top of her. His hooves on her arms. "Don't say I didn't warn you." With one thrust his entire cock was forced deep into her dripping pussy. The flared tip now bulging out between her small tits.
Apple Bloom could only let out a quiet scream as the stallion pumped her full of his meat. Ramming his hard shaft inside her so hard it was bruising her entrance. Shaping it to fit his cock only.
"GAH!!!" Apple Bloom took heavy breaths. His cock felt like it was reshaping her entire insides with each thrust.
"Damn girl.... really tight..." Big Mac's quick thrusts changed into slow but hard thrusts. "Gotta keep... going strong!" He pulled out till all that was left was the flaring tip. He took a deep breathe and rammed his throbbing cock all the way inside her.
Apple Bloom shouted loud enough for the other girls to hear her. It felt like a dog was being shoved into her all the way. Even the balls were not going easy on her. The gallon filled sack were slamming into her like an actual bowling ball.