The noise of muffled chatter and general conversation resonated around the area of the grey warehouse. Hundreds of stallions stood impatiently at the entrance, waiting for the main event.
"Alright, listen up!"
The stallions quickly quieted down and focused on the lavender mare standing in front of them.
"As you may have extrapolated from your invitations, this is a closed sexual event. If you would kindly pay attention to me, I will explain the setup here. Good. On the other end of this establishment there is a hyperactive pink mare who will be yours for tonight. She has consented to a few changes to her psyche, which I will detail here shortly. Pinkie now only has one motivation in life, to please stallions. She does not care about receiving pleasure herself, only giving it. Pinkie will consent to anything you wish her to do in this state, but you must instruct her what to do before she will please you. If you wish to give her complete free will, say 'Oranges' three times in quick succession. She has also received three other changes, one being a spell that prevents her orifices from getting loose, and another that prevents injury. She can feel pain, but cannot be hurt by your actions. The final enchantment removes the need for her to breathe. This will allow you to liberally use her mouth without fear of consequences. Now that the explanation is out of the way, here are the rules. You are strongly encouraged to cum inside of her, but if you must pull out, be sure to avoid getting your semen on any of the other stallions. If you are going to attempt something that may affect the experiences of the other stallions, please ask them first before continuing. After you have had a maximum of 3 consecutive climaxes, you must wait 30 minutes before using Pinkie again. If you would follow me, I will show you the accommodations present here."
They trotted briskly over to the middle of the warehouse, stopping to let Twilight explain herself.
"On your left are 3 wood-finished boxes with large circular holes in the front. The first one instantly makes you erect and restores your ability to ejaculate, if it has been compromised by overexertion of the appendage. The second extends your length to 13 inches. The effect is permanent, so be sure to think before using it. The third applies a multiplier of 30 to your pleasure and semen output. I would strongly recommend that you do not use this one if you are inexperienced, as it can cause lesser willed ponies to pass out from the pleasure. There is a stack of completely optional condoms to the right of the boxes. On your right is a large collection of Fleshlights of various varieties and styles. These may be utilized while you are waiting for a turn or simply need to relax a bit. You may take at most 3 of these home when you are done here. To the left of those is a magical cleaning station that will cool you to room temperature and remove any sexual fluids from your skin. Do you understand what I have told you today?"
All of the stallions nodded enthusiastically.
"Then you may start. You 3 in the front, please step forward."
The aforementioned three ran over to the left and stuck their members into the first two boxes in quick succession. They then went over to Pinkie and stood in front of their respective holes. She opened her mouth and allowed the first stallion to begin roughly fucking her face as the other two plunged into her ass and tender folds. 30 or so stallions almost tripped over each other getting to the Fleshlights. Each of them began pumping the sleeve up and down their shafts as they watched the scene in front of them. Pinkie was completely overloaded with pleasure. Her eager ministrations to the members inside of her aroused her more than she could express with words. It wasn't apparent how much time had passed before the first orgasm of the night hit her. The stallion using her throat suddenly tensed up and shot thick streams of seed directly into her stomach. She moaned audibly around the shaft, hoping to prolong the pleasure for him. After a few moments he withdrew, slowly softening as he walked over to the first box to arouse himself again. He then joined the others by the right, several of whom had cum multiple times as they observed. Another stallion came from the back and quickly sunk himself into her throat, thrusting with wild abandon. The two stallions using her other holes stopped thrusting and emptied themselves inside, completely satisfied as their orgasm rolled through them. They pulled out shortly thereafter and joined the others on the right. Another three stepped up to take their place. These ones lasted much longer than the former, causing Twilight to whistle from the corner as she watched. They eventually had to cum, and they did before retreating back to the right. A pattern began to emerge, stallions transitioning from Pinkie to Fleshlight and back again in a steady rhythm. Soon she was bloated and messy, leaking seed from every orifice as her belly sunk onto the floor. Her throat ached and her holes were sensitive and warm, but she still came and helped the others cum. Over 100 stallions stood had used her by this point, and she was starting to feel very exhausted. Noticing this, Twilight locked Pinkie in a set of spreader bars, preventing her from collapsing. The stallions, having grown a bit tired of the routine, began pulling out to cum on her fur, coating her with a fresh paint of white. Several of the larger stallions began experimenting with the third box, grunting very loudly as they pounded her. When the pleasure got to be too much, the geysers of seed erupting from their members removed all traces of pink from her coat. Twilight, having become very inflamed at this point, grabbed a stallion from the right to pound her. As he thrust into her, she let out a high-pitched squeal, causing the stallion to grin. Almost an hour later, after Twilight's 25th orgasm, he came, expanding her uterus with the quantity of his seed. Twilight blushed and ran her hooves across her cum gut. She loved the feeling of giving so much pleasure to her stallion. A few minutes later, he pulled out, leaving her a panting mess. A few hours later, before the stallions left, Twilight spoke up.
"All of you need to gather in a circle around her right now."
They did just that, and Twilight used her magic to apply the effects of the first and third boxes to every member in the circle. She then forced all of them into orgasm. The large streams of white began to create a pool of cum on the floor as the entire warehouse filled with their seed. When the pool reached up to Pinkie' neck, Twilight released them all and stopped their climaxes. Her magic gathered up all the seed and teleported it to a storage area in Canterlot. You never know what you may need that stuff for.
"I take it you all enjoyed yourselves? Okay then, take your Fleshlights if you'd like, and leave. Thank you for participating."
And with that, everyone was gone. Twilight smiled. She walked over to Pinkie and released her. After cleaning her coat, she removed the enchantments from her mind.
"Have fun there?"
"Oh, you wouldn't believe... Thank you so much for this!"
"Anytime, Pinkie. Anytime...."