Sunny quivered with anticipation as Izzy slowly sauntered towards her, the strap on between her legs swaying to and fro as she did so.

"Since Zipp didn't waste any time this morning with bringing the toys out, we agreed that since she started the day with the vibrator, that I could end it with the strap-on," Izzy told her marefriend as she laid on the clean diaper on the floor. Sunny spread her legs a bit more as the unicorn began to step over her, getting the toy lined up with her rather wet entrance.

"You probably didn't even need the lube, Iz, that's how ready she is," Zipp commented, chuckling.

"Better to be safe than sorry, Zipp," Izzy iterated, sitting up a bit to make sure the strap-on was at the right entrance. "And here we go!"

With that, she gently bucked forward, and Sunny's lower lips eagerly parted, welcoming the lubed up shaft as she took in a quiet gasp. The earth mare kept an eye on Izzy's expression, and there must have been something pressed against her marehood as well, because as she continued in, she also got a look of pleasure on her face.

It was only a matter of seconds before the entire length of the toy had bottomed out, and Izzy felt their bellies touch. She leaned back some more to get a better view of the penetration.

"What a good girl you are, little Sunny," she praised, slowly pulling out, feeling just a little resistance as Sunny's inner walls squeezed, wanting to keep the intruder in. Just as the slick rubber medial ring exited, she pushed back in, and both of them gave moans of ecstasy. She repeated this several times, getting used to the motions required.

"You want in on the fun, Zipp? That tongue of hers is amazing, I promise," Izzy asked, winking down at her marefriend.

"Heh. If that's okay with her," the pegasus replied, as she pushed off the changing table she had been leaning against.

"Oh I'm sure she won't mind. The more the merrier, right Sunny?" Izzy asked.

"Ah... Ah!... Y-Yeah, why not?" Sunny replied in between her lustful gasps.

"Well, in that case," Zipp said, walking over to the lustful scene in front of her, and straddled the earth mare laying down on the floor. She kept her weight towards her front side as she began to lean her back half down towards Sunny's head, not wanting to accidentally go down too fast and hurt her.

Apparently, her rump's rate of descent must have been too slow, as she felt Sunny's front legs reach up, take her by the flanks, and pull her down, just a second before she felt her snout and tongue on her marehood.

"Oh! Ah... Oh my stars, she's eager, isn't she?" Zipp asked Izzy, who was continuing to thrust into her.

"Well, what do you expect? We did kinda put her hormones into overdrive today with that vibrator," the unicorn responded.

"Yeah, guess you're right about that... Sweet Celestia, you weren't kidding about her tongue, Iz," Zipp said, as her breaths gradually became heavier. The squelching sounds of the toy entering and exiting Sunny was now joined by muffled sucking and slurping from her upper half as Zipp slowly put more and more weight down onto Sunny's face, as her hold on her flanks seemed to welcome it.

The Brighthouse's new nursery was now filled with erotic moans, gasps, and whimpers as the three mares pleasured each other. The cadence was only interrupted when Izzy felt Sunny wrap her back legs around Izzy's hindquarters, and held her inside after her next thrust, as she gave a muffled cry into Zipp's folds.

"Aw, did our little filly just cum?" Izzy asked.

By now, Zipp's tongue was nearly hanging out of her mouth.

"Sh-she's not the only one... Ah, Sunny!" Zipp cried, as she put nearly all of her weight down on the mare's snout as she began to drink down everything the pegasus had to offer. With how Sunny's back legs weren't letting up, neither was the small vibrator in the elastic pouch on backside of the strap-on currently pressed against Izzy's lips, and the unicorn was the last to reach her climax.

Several moments later, Zipp had to reach forward and use Izzy's shoulders to pull herself off of Sunny's mouth, before she rolled over onto her side on the interlocking foam tiles that served as half of the nursery's floor. Slowly, Sunny released the hold she had on Izzy's flanks, and let the unicorn pull out, before she reached down and turned off the vibrator.

"I'm... I'm sure we could go half the night if we wanted to, but I do think I'd like to get some sleep," Izzy said, looking over at Zipp, who was now staring wide-eyed over at the doorway. Izzy turned, and saw Pipp standing in the doorway, her eyes also wide, and her fluffy wings standing at attention.

"Evening sis, see much of the show?" Zipp asked as she caught her breath.

"Just the ending of it, though I could hear you right after I opened the front door," Pipp replied.

Izzy slid out of the strap-on, and returned her attention to Sunny, glancing over at the changing table and grabbed the bottle of foal powder, sprinkling Sunny's nether regions as well as the open diaper, before twisting the cap shut, and setting it off to the side.

"I hope you can give this a soaking in the morning, Sunny. Would hate to waste a diaper before you get back to your smoothie cart as an adult for a few days," Izzy teased as she brought the diaper up between her legs, got it smoothed against her stomach, brought the back wings up, and taped it up.

"Hope we didn't shock you too much, sis," Zipp said as she got to her hooves.

"Not at all, honestly just sorry I missed most of it."

"How was your trip home?" Zipp asked.

"Productive. In fact, because of what I just saw, I think I know the ponies to come to first with a new idea of mine..."

"Well, let's talk about it in the morning. Sunny needs her sleep before she opens her smoothie cart back up!" Izzy said, her horn lighting up again and picking the diapered earth pony up, and levitated her towards the crib. However, once she laid her down on the mattress, she hopped in herself, snuggling up next to her marefriend, before raising the bars up.

"My bed upstairs is nice and all, but I miss this from the hotel room..." Izzy said.

Sunny smiled and snuggled into the unicorn more as a response.

Zipp and Pipp smiled at the adorable scene.

"Sweet dreams, you two," Zipp said, flipping the light off, before heading upstairs with her little sister.

"Well, at least I've got a few minutes before I hit the hay, so what is this new idea of yours?"

Author's Note