"You're dripping. Go take care of yourself, Stripes." Thunderlane pointed at the back door and was already reaching to clean up after their little game.

Rainbow looked at the stallion, then at the back door. Now he is going to make me go outside all the time, on my own or otherwise… okay, this might be a bit- She cut off from her thoughts when her bladder let her know it was really time to go. Trotting to the back she reached out with her mouth and opened the door.

"Oh, hey Rainbo-" Twilight Sparkle froze halfway through greeting her friend. To her shock, the Wonderbolt, the most amazing flier she knew of, had squatted at the back door of Thunderlane's house and was. "RAINBOW!"

Dash was relaxed, a happy smile on her face, it took the third yell before she realized somepony was shouting her name. Jumping upright, she turned and saw Twilight. Her eyes wide, Dash shook her head and tried to run back inside, but a force-field stopped her.

"Rainbow Dash, what in Celestia's name are you doing? That is… why are you wearing a collar? What… are those black socks? Why is your tail…" Twilight's brain lost more and more track of her thoughts the more she noticed was very strange, and worse, sexual.

"Princess!" Thunderlane appeared in the doorway. "Is something the matter? I just sent my pet out to relieve herself…" He reached a hoof out and onto Rainbow's back, pulling her in closer.

Looking to the stallion, Rainbow sighed. "Bark bark bark. Twilight, just chill. We are having some fun and I needed some alone time." The ruffling of a hoof on her back did two things, it soothed her a little, but it also reminded her that she had the better of a glass of Thunder's semen down her back.

Twilight's shock started to calm. "Rainbow Dash-"

"Stripes. When she wears my collar, Princess, please call her Stripes." Thunder ran his hoof up and down the mare's back, making sure to work the mess into her fur properly.

"Stripes? This… is this some kind of… is he doing this to you against your wishes?" Twilight looked at her friend, begging for an explanation, while her mind—on some level—couldn't handle one.

Buck, I wanted to say it was, I wanted to say get me out, I want… I want him to show me what he wants to do next. "No, Twilight, I am cool with this. Thunder needed to relax, I offered to help him. I guess… I didn't know what that would mean at first, but it has been… it has been…" she coughed.

"What was that, Da… Stripes?" Twilight blinked innocently.

"It was fun. I liked when he marked me with his cum. I liked it when he bound me up. I adored it when he stuffed me with a huge butt plug thingy. And when Fluttershy stroked me off, telling me it was something she did for Wynona when she was in heat, I came harder than I ever have in my life. There, is that what you want to hear?" Rainbow was panting hard, but felt a pair of forelegs wrap around her, pulling her into a hug. What surprised her was that it was Thunderlane.

"But… how does… then you… AHH!" Twilight charged her horn and blinked away in a POMF of her magic.

"You meant all of that, Stripes?" Thunder let go, realizing he had inadvertently marked himself too.

"Buck you, I meant it." Rainbow pulled out from under the stallion and started marching inside. "And I want the rest of the day off… and a shower… and this plug out of me." She looked around inside, spotting the bathroom after some work.

"Dash, are you okay?" Thunderlane followed her. "I didn't go too hard on you, did I?" He walked into the bathroom and right into a kiss. His eyes went wide as he realized Rainbow was doing the kissing. He relaxed after a moment, sighing and letting her tongue push into his mouth. Then the taste hit him. Yanking back, he heard her laughing. "What was that?"

"The small glass of bull cum. And no, you didn't go too far." Rainbow worried at one ribbon while the stallion tried in vain to wash his mouth out. She got one side undone, and the second almost free when he finally reached over and pulled the ribbon out of her wing for her. "Thanks. What about the plug?"

"In the shower." Thunder pointed with a hoof to the big shower. He watched the swaying plot go in, tail held so high there was nothing left to the imagination.

Rainbow turned on the shower and got it adjusted. A click at her neck earned a gasp from her throat as her tail was released. "Buck that is good. Hey," she looked back over her shoulder, seeing the tail plume arced high still, "why can't I… ugh, stupid muscles. That is arced higher than Fluttershy!"

"Side effect. Lovely, wonderful, side effect. Don't worry, tomorrow I will put it back on." Thunder rubbed the sensitive dock and watched as Dash practically collapsed under the attention. Rubbing it more and more, he could see her folds glisten with arousal. Without warning, he grabbed the base of the plug and pulled.

Her world exploded into nearly a dozen complex sensations and Rainbow gave a low, deep groan as her rear was finally liberated. Holding still, panting hard, she felt the emptiness as a loss, as a deep need to have it replaced. She opened her mouth, about to ask for just that, when the weight of a stallion landed on her back. "My rear… please?"

"Yeah, I thought just the same thing. Hold on." Rainbow felt something press around her plot, a hoof teasing something around what felt almost like a gaping tail-hole. She was about to question Thunder when he sank into her, driving every possible question and thought from her head. She began to groan and grunt like an animal, with every thrust.

"After all that and you are still a bit tight. Tonight you can have the bigger one and I'll take the little one." Thunder bucked like the stallion he was, he shoved and dragged, he plunged into the mare just to hear her constant little sounds.

When Dash's world collapsed into pleasure, she was shocked at first that she had gotten off only to anal sex. As her orgasm took full hold she didn't really care, it was great. Just then, her slippery socks skidded on the floor and Dash fell into a squirming, wriggling, and pleasure-soaked heap.

"Really pent up in there? Can't blame you, Dash." Thunder wasn't quite done with his own release, so he reached under his belly, pumping himself until he was. Giving a happy groan, he aimed and made sure to spray down Rainbow. "Buck, Dash, just the thought of you as my pet is too hot to handle. I am going to need to get a chastity belt for myself."

Dash rolled to her side, and felt liquids trickling from both her rear holes. Looking up, she saw the satisfied-looking stallion and grinned. "Sorry Thunder, you are entirely too good at that." She was a master of having her own ego stroked, she knew how to do it herself. "Socks off, please?"

It wasn't long until both ponies were climbing out of the shower, making a point of brushing together as much as possible. Stepping before the drying machine first, Rainbow spread her wings a little and closed her eyes—it was bliss.

"You can keep the collar." Thunder stood behind Dash, admiring that even with her tail down as much as her dock would go, she was still plainly visible. He waited, and waited, and finally gave up, lifted his hoof and smacked the mare's plot sharply. "Hey Dash, move it!" When she didn't move immediately he dropped his voice. "Next time, I won't take samples, I will tie you up out the back with a sign saying, 'free use for all stallions.' "

Rainbow looked over her shoulder. "Nice try, stud, but you have me entirely too used to being messed with." She stuck out her tongue, but turned and walked past him anyway. "All yours."

"Yeah, you are." He grinned and stepped up to the machine. Thunderlane tried to go as fast as he could, he was already half-dry, but by the time he was able to leave the bathroom the house was quiet. "Ah buck… I hope she comes back."

"Fluttershy?" Rainbow Dash arrived at her friend's house, landing out front, but seeing nopony around, not even her animals. "Shy?" She reached for the door and tried to knock but the door opened inwards. "Shy?" She poked her head, and then stepped in completely. "Aww, she is probably hiding under her bed after what she did to me. Damn she was good with her hoof…" Rainbow approached the stairs and made her way up.

"Yes!"

Dash's ears turned and perked up sharply toward Fluttershy's bedroom. She crept slowly, getting nearer to her friend's bedroom, an odd heavy feeling in her belly increasing the closer she got.

"Yes master, I will be a good… a good… a gooooooooooooddddd…" Fluttershy's voice held the edge of a mare reaching her peak in a rather sharp manner. "Pet..."

"Fluttershy?" Rainbow pushed the door open, her brain not really working. On the bed, her yellow-coated friend lay, a big rubber toy shoved deep into her body, and a collar around her neck. "Shy, what the… well… I can't point the first hoof, can I?" Her friend was alone in the room.

"RAINBOW!" Fluttershy's eyes flew open from how they had drifted closed. She was still getting aftershocks of the intense orgasm, her toy falling out of her body as she tried to turn and maintain dignity. She had clearly forgotten her collar had a leash that was looped around the headboard. "Ack!"

"Buck." Dash turned and ran, zooming down the stairs, racing for the front door and spreading her wings to take to the air.

Thunder had just gotten things ready for Stripes' eventual return. He kept telling himself she would come back, but there was a niggling worry that she wouldn't. "The worst bit is, that was an expensive collar!" He wanted to laugh at the joke, but he knew the mare had him by his precious anatomy.

"She isn't going to come back, it's getting dark, and-" Thunderlane was interrupted by a crashing sound, the back door thrown open. Turning, Thunder saw it was the mare of his naughty fantasies… and dreams. "Rainbow!"

"You!" Rainbow Dash charged forward, a streak of her tail-colors behind her as she slammed hoof-first into the stallion's cheek. "You bastard! I went to the hospital to get a contraceptive amulet…"

Thunder, nursing his cheek and laying on his back, couldn't help but admire how furious and dominant Dash was. And still wearing my collar. Thoughts of the powerful mare under his control drowned out the pain and had him growing in excitement.

"Ugh, and this is all just getting you… getting you…" Rainbow looked at the coffee table beside where she had Thunderlane pinned. "Are those… all for me?" The plug was there, the bigger one he had promised. A different, lighter hood. A ball gag that made Dash lick her lips in anticipation. She wanted to reach out and try it right then and there.

"All for you. I can put in the gag first if you like?" Thunder was hard enough now that he felt his shaft bump into Dash's dock, her tail still held in an arc. "Or do you want to cry out as I stuff that plug in?"

"P-P-Plug… first…" Rainbow was hypnotized; entranced by the toys. "Wait, no!" She shifted, pinning the stallion more firmly under her. "You and your fun… you know what you went and did?"

"Got you really angry about something. What is it?" Thunder reached up, stroking Rainbow's shoulder, playing his hoof up against her collar.

"I am pregnant, you feather-brain!" Rainbow Dash knocked his hoof aside, then sharply leaned down and kissed Thunderlane as firmly as she could. She leaned backwards, felt him line up with her vulva and didn't care if that is what had started the mess. Can't get any worse, buck he is so sexy… She pushed back, shoving herself down around the stallion's member.

Thunder's eyes were wide, he was rock hard, balls-deep in the mare of his dream and she had just laid such heavy news on him. But he wanted to buck her. Jerking his hips sharply, he barely got any traction at all, and couldn't pull away from the kiss.

Rainbow rocked forwards, then back. She pulled her lips back from the kiss. "You are responsible, you take care of me until we have them, and I am staying here. You got it?" She was rocking more, she thought Thunder nodded, but it could have been a trick of the light. "And if you invite your friends over when I am tied up… well, that is something for Stripes to deal with, isn't it?"

"Y-Y-Yes." Thunder was trapped in ecstasy, pinned under the mare and getting bucked. But it wasn't how he wanted her, and wasn't how he knew she liked it. Reaching up, he grabbed her around her body with his forehooves, braced his sore wings for the pain, and rolled.

Dash was suddenly on her back, looking up at the grinning stallion. "M-M-Master…" She said the word before she realized it, then clamped her snout closed.

"Stripes?" Thunder waited for Rainbow to nod. "Good girl. Now, no more of this, we have to celebrate my little brood-mare's first litter." He stood up sharply, pulling out of Rainbow before either of them got close to their end. "You wanted your rear filled first, but I think Stripes prefers the gag."

Rainbow just wagged her tail, looking up at Thunder with devotion in her eyes.

Author's Notes:

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