Mrs. Cake descended the stairs, trying to scrub the image of Pinkie's little experiment from her head. She had walked in on Pinkie in a startlingly wide variety of situations, including a few instances where Pinkie had been... spending some quality time with herself. But even in those cases, Pinkie hadn't had.... that. Why, oh why, couldn't she have remembered to lock the door?

"Are you alright, dear?" Mr. Cake poked his head out of the kitchen. "You look as if you've seen a ghost."

"I rather wish I had seen a ghost," she answered.

"What did you see?"

"Well.., I... uh.... it was..." She stopped as she noticed the blood drain out of her husband's face. She turned around to see Pinkie Pie descending the stairs behind her. She had traded the short-shorts for a pair of pink sweatpants. It didn't help at all. Her boner had pitched an enormous tent in the front of them. Not helping matters was the fact that she obviously hadn't taken the time to put on underwear; the very tip of her erection bore a slowly expanding patch of sticky wetness. Mr. Cake tried not to look at it.

"You needed me for something, Mrs. Cake?" Pinkie asked.

"Um, no." Mrs. Cake waggled her head. "I thought I did, but I don't. You can go back to doing... whatever it was you were doing. In fact, you can take the rest of the day off."

"Awesome! Thanks!" She spun around and bounded back up the stairs.

Mr. Cake's eye twitched. "Was that... a..."

"Yes, it was," Mrs. Cake said. "She... uh... failed to lock the door."

"Has that... always been there?"

She shook her head. "It isn't the first time I've walked in on her while she was... doing that. This was the first time she's had one of those."

"But how...?"

"It's Pinkie, dear. Best not to ask questions."

"But even for her, that's-" He stopped, interrupted by a loud buzzing from above. "Is that what I think it is?"

"Probably."

"She does know that we can hear her, right?"

"I have no idea." Mrs. Cake shrugged. "The best thing we can do is ignore it and hope she doesn't wake the kids. Why don't we go back into the kitchen. We won't be able to hear her in there."

"Yes, that sounds like a good idea." He turned and started to walk into the kitchen. He stopped as Mrs. Cake wrapped her arms around him from behind and pressed her body against his back.

"Just so you know..." she whispered into his ear. "...You've got nothing to worry about. Yours is way more impressive than hers is."

He chuckled. "That's good to know."

"Knock knock!" Both of them spun around to see Rainbow Dash standing in the doorway, a wry smile on her face. "I'm not interrupting anything, am I?"

"No, no." Mr. Cake shook his head. "We were just... uh..."

"Is Pinkie around?" Rainbow Dash interrupted. "She said that she had wanted to hang out."

"She's upstairs, but you might want to--"

It was too late. Rainbow Dash wasn't good at waiting and had already disappeared up the the stairs.

Mrs. Cake chuckled. "She's certainly going to be surprised."

Rainbow Dash didn't bother to knock on the door before throwing it open. It wasn't the first time she had walked in on Pinkie having some quality time alone with a vibrator. In fact, on one occasion she had found Pinkie in the exact same position: the vibrator set upright on the floor with Pinkie squatting over it, bouncing up and down. But this time was a little different. Normally there were three sounds: the buzzing of the vibrator, the shlick of it sliding in and out of her cooter, and her gasps. This time there were four sounds. The fourth was the wet thwapping of her dick against her belly. Rainbow Dash was pretty sure that that hadn't been there last time.

She felt like she ought to say something, but she was too dumbfounded. The way Pinkie's penis bounced up and down with the rest of her was nearly hypnotic. An image flashed across Rainbow Dash's mind of her rushing forward, grabbing the cock and shoving it into her mouth. Obviously, she couldn't actually do that... could she?

"Hey, Rainbow Dash!" Pinkie gasped, not even slowing down. "What's up?"

"Pinkie, where the hell did that come from!?"

"Where did what come from?"

"The cock! What else would I be talking about!? I know you don't have one of those before! Is it permanent or what?"

"Nah, I'm just trying it out."

"But... but how!?"

"I... uh... I can't say."

"It was Twilight, wasn't it?"

"...no!"

"Who else in town could make a dick spell?" Rainbow Dash shook her head. "Seriously, Pinkie, what the hell!?" She couldn't stop staring at it. Little drips of precum were flying off the head as it bounced.

"I was curious!" She stopped bouncing and settled onto the vibrator, letting it slowly slip inside her. She smiled lustily at Rainbow Dash and raised an eyebrow. "Aren't you?"

"Yes- NO!" Rainbow Dash shook her head so fast she almost gave herself whiplash. "Of course not!"

"You totally are! You're blushing!"

"I am not!"

"You totally want my dick, don't you!"

Rainbow Dash's mind was bombarded by images of herself being fucked by Pinkie. "No, I don't!"

"Come on, Rainbow Dash." Pinkie switched off the vibrator and began to stand up. Her breasts and dick swayed as she turned to Rainbow Dash. "You know you want this." Pinkie wiggled, sending every sexy bit of her body into motion. Dash swallowed. She had to admit that Pinkie was pretty hot. The girl defined the hourglass figure. Her breasts and hips were impressive. Her chest had a good bit of size to it; squishy without going overboard, and had nice, puffy, pinchable nipples. Dash's eyes slipped downward. Pinkie wasn't skinny, but her waist was far more slender than it should have been, going by the amount of junk food she consumed. All the food must have gone to her hips and butt, which were nice and meaty, kept tight only by the fact that Pinkie jumped up and down so much. Then there was the dick. Long and slender, and topped off with a nice, partially wrapped, pink head. And the balls, nice and squishy-looking. "How about it, Rainbow Dash?" She took her dick and waggled it in her friend's direction. "Wanna give my dick a try?"

Rainbow Dash felt her face burning. Something in the back of her mind told her that jumping right onto Pinkie's dick was a ridiculous idea, especially since it hadn't even been there the day before. The stuff in the front of her mind thought that it looked awfully tasty.

"Oh, what the hell. Why not?"

Author's Note

Pinkie never remembers to lock her door. You'd think she'd have learned by now.