Sibling Revelry

Shining Armor flopped onto the bed. They were once again in their parent's room. Even though the taboo nature of their relationship was a massive turn-on for both of them, it was so much more arousing in this room. Even though they knew they wouldn't be caught, the very nature of having sex where your parents could catch you was exciting.

While he was unable to have an erection, Shiny's cock was leaking seminal fluid as his sister climbed on top of him and pushed his wrists down. He loved being dominated by ponies smaller than him. He spread his legs and tilted his head back, waiting for her entry.

Alas, entry didn't come. Instead, she was poking at him. They both looked down between his legs, confused as to why she couldn't fit her cock down his hole. They both felt like idiots as Twilight reached down to pull out the plug he was still wearing. It was pretty tight in there, too. When it finally came loose, she could see into his gaping hole. It was at this moment that a new idea ran through her mind.

Placing her lips against his pucker, she dug her tongue up into his rectum, helping to lubricate him in the process. With every lick, her nose rubbed against his balls. Shining Armor was in ecstacy right now, with his sister tonguing his prostate and nuzzling his gonads. Twilight was also in a good place, as her nose was pervaded by the scent of her brother's testicles, and his cock juice was dripping down her forehead and cheeks.

It was time now for the main event. Grabbing Shining Armor by the ankles, she bent his legs back and pressed her dildo against his arsehole. By now, it was ready for her, and she slipped right in with almost no resistance. The room was filled with the sound of their hips slapping together and Shining Armor's feminine moans of pleasure.

"Yes, Daddy!" shouted Shiny. "Pound my pussy!"

"You want me to cum inside?" taunted Twilight, saliva dripping from her chin. "You wanna have my babies? You want to be the mother of my kids?"

"Yes! Breed me!"

"As you wish, momma." With a heavy slam, Twilight shoved her cock deep into her brother's arse, both of them spewing cum from their respective genitals. They didn't have the aphrodisiac to keep them going this time, and Twilight collapsed on the bed next to her brother. The two shared a tender kiss, and caught their breath.

After a short nap, they had another bottle of mead and returned to the bedroom. Before they returned to their activities, Twilight removed the dildo from her strap-on and fitted a fresh one in its place. This one was shaped like a werewolf cock. Shining Armor recognized it from his wife's collection. It was a very popular model.

After one more session of anal sex, the two fell asleep. The bulbous knot at the base, once inserted firmly into Shiny's arsehole, stayed inside of him the entire night.

When Twilight awoke the following morning, she looked down to see Shining Armor suckling at her cock head. "Good morning, momma."

Shining Armor took the dildo out of his mouth. "Good morning, Daddy. Do you like my dress?" He rolled off the bed and presented himself. He wore a yellow sundress, which Twilight recognized as one of their mother's.

"I do like," chuckled Twilight. "You're definitely taking to the role of Momma very well."

"Thanks, Daddy," smiled Shiny. "I picked out an outfit for you, too. It's sitting on the dresser." Shining Armor stood up and walked out of the room, swaying his arse as he went to make breakfast.

Twilight rolled out of bed and approached the dresser. The outfit her brother had picked out was one of their father's suits. This outfit was very deserving of the name Daddy. She put it on, not even bothering to remove the strap-on, as she was sure they'd be using it again after breakfast.

Shining Armor was not the best cook, so Twilight was pleasantly surprised when she came out of the bedroom to find that he had prepared a plate of raw fruit. While not the best breakfast, it would suffice. At least it had a lot of simple sugars involved, as they would need that for the day they were planning.

"How was breakfast, dearest?" asked Shining Armor, batting his eyelashes.

"You did a great job, honey," chuckled Twilight, enjoying the game they had just made. "I love you so much."

Shiny stood up and walked around the table, giving Twilight a peck on the cheek. "Part of me wishes we could go out on the town like this," he said, his face turning beet red. "It's too bad everyone around here knows us."

Twilight chuckled. "Yes, that would be a lot of fun, if we could... It really is too bad."

"I have an idea, my lovely," smiled Shiny, dropping down to his knees. "What if, once we return home, we try to find a place where no one would recognize us?"

"What a lovely idea," she smiled, shifting toward him. "And we could wear wigs and makeup, in case they take pictures."

"I like the idea of you wearing makeup," smiled Shiny as he unzipped his sister's pants and pulled out her cock. "Big blue kiss shaped stamps all over the inside of your thighs." He deepthroated the dildo that had been inside his arse all night, smiling as his master pet his mane.

"What a great idea," chuckled Twilight. She couldn't remember the last time she'd had this much fun. Whenever they played house as children, she had always been the mom, and her brother had always been the dad. Now, with their roles reversed, it was like looking at the world with brand new eyes. She liked being the man in charge. She liked being the top dog; the alpha male. It suited her just fine.

They went back to their parents bedroom, where they resumed their wild lovemaking. They were so very exhausted by the time they were supposed to have lunch that they skipped the meal, enjoying the entire afternoon talking to each other while roleplaying as their parents. As their dialogue was rather lewd, Twilight began to empathize with her parents regarding their collection of well used sex toys.