Mechanical Love

Twilight was stuck. Physically stuck. She had created a literal sex machine, and was currently getting pounded at. The machine had fastened several shackles around her wrists and ankles and was holding her in midair. The cold machine dick was plunging itself inside her, as it had been for the past hour or two. It had felt good for the first couple of orgasms, but now it was starting to hurt. Occasionally, a prosthetic mouth would emerge and suckle on her nipples, but nothing much other than that. Twilight was glad at first that her parents were away, but now she wasn't. She moaned as she orgasmed again, her juices, spilling out onto the floor. Her thighs were soaked with her juices, and she was covered with sweat. Fortunately, however, she had called Sunset Shimmer beforehand, and Twilight really hoped that Sunset Shimmer would get here soon. Twilight thought back to that morning to when she had started the machine. She had set the timer to 500 seconds, but it had obviously been longer than that. No, she had been trapped there with the metal penis thrusting in and out of her for an hour or two.

Twilight whined in slight pain as she struggled again to get out. As she did so, the fake mouth emerged again, lowering itself to her right nipple. As it made contact, Twilight shuddered, and as it started to suckle, she moaned. Her legs were so sore from the constant thrusting that when she first heard it, she wasn't sure she had heard it in the first place, despite the whisper quite machinery. But then she heard it again. There was knocking on the door.

"Come in!" Twilight cried out. "Please, come in!" She heard the door open and close. Then Sunset Shimmer's voice rang out.

"Twilight? Where are you?" she asked.

"I'm down here!" Twilight moaned out. She could feel her climax approaching. "In the basement!" As Sunset Shimmer's footsteps sounded and got closer, Twilight thought of what to say. Then Sunset Shimmer opened the door and froze. Her face reddened.

"Uh, Twilight, what's going on?" she asked. Twilight pointed at the counsel as best she could.

"Turn it off!" she whined. "Quickly, please!" But as she finished, she felt her climax arrive, and her juices splatter on the floor, like it had with so many other orgasms. The fake mouth moved away from Twilight's nipple. Sunset Shimmer's blush deepen.

"What is this?" she asked. "And why are you getting rutted by a machine?" Twilight blushed.

"Well, I made a machine to help with sexual depravity, and decided to test it out," Twilight moaned out. "And, well, I've been trapped here for the past....wait, what time is it?" Sunset Shimmer pulled out her phone and looked at the time.

"It's almost eleven," she said.

"Ok, wow, I've been strapped to this for almost three hours," Twilight said. "Now, please! Deactivate this thing!" Sunset Shimmer pressed one of the buttons. Instead of turning off, the metal penis started pumping faster, making Twilight moan louder, and making her boobs jiggle even more.

"It's the switch!" Twilight moaned. Sunset Shimmer looked around for a few seconds and finally found the switch. She flipped it, and the machine finally started slowing down. Twilight was panting, and let out one final moan as another orgasm struck. The mechanical penis retracted itself into one of the walls of the machine frame, which was all hanging on the roof, with the shackles retracting as well. Twilight was finally set down. As ger feet hit the floor and under the support of her own weight, she collapsed. Sunset Shimmer ran to her and helped sit her up.

"Are you ok?" Sunset Shimmer asked. Twilight nodded.

"I'm just sore," she said. "That machine is good. Took much longer than I thought, but good." Sunset Shimmer snickered.

"So want happened, anyway?" she asked. Twilight shrugged.

"I don't know," she said. "Help me over to the console." Sunset Shimmer picked her up and dragged her to the console. Twilight grabbed the edges and was able to steady herself from there. She looked at the console and facepalmed. Twilight looked at Sunset Shimmer.

"I put the 500 in orgasms, not seconds!" Twilight exclaimed.

"There's an orgasm slot?" Sunset Shimmer said with a grin. Twilight sighed.

"Yes," she said. "You want to try it out, don't you?" Sunset Shimmer nodded.

"Yes, please," she said. Twilight stepped away from the console and featured at it.

"Then have fun. You can choose the size of the penis, and for how many seconds it'll rut you for, or for how many orgasms it'll give you," she said. Sunset Shimmer grinned as she typed something in in the orgasm slot.

"Ok, now what?" Sunset Shimmer asked, turning to face Twilight.

"Take off your clothes and stand below the machine," Twilight said. Sunset Shimmer did so, throwing her clothes into a pile, her D-cup breasts now on display. The metal penis and shackles stared lowering down towards Sunset Shimmer. As the shackles locked themselves around Sunset Shimmer's wrists and ankles and lifted her up into the air, Sunset Shimmer watched the penis lower itself towards her damp neathers. The penis was thick, and a foot long. And then it struck. As it plunged itself into Sunset Shimmer, she realized that it was going to be a very pleasing 10 orgasms. As the cock pumped itself into the depths of Sunset Shimmer, she moaned and screeched. The last time that she had been rutted this well was when Flash had chained her to a wall. Sunset Shimmers boobs were bouncing and jiggling around. This triggered the mouth, which latched onto her right nipple and started to suck. Sunset Shimmer moaned and panted. She had never felt pleasure like this! The robotic cock was long, very hard, and cold. Plus, getting her nipples sucked on was nice. She continued to moan as she felt her climax approach. And it hit. And it was powerful. If the cock had been a boys, it would've stopped, or it would've orgasmed with her. But it didn't. It just didn't stop. And it felt so good.