Zack grunted as he shot his latest load into the waiting pussy of his voluptuous sister. Completely spent, he fell forward, draping himself over her humongous breasts and nearly completely covering her small frame.
"Mmmmm," Jen hummed to herself with a satisfied, pleasure filled tone in her voice, "That was divine lover." She grabbed the rock in her hand, "I wish you had all the sexual stamina I do." There was a flash and Zack felt himself filled with renewed vigor once more.
"That stone is amazing sis, I'm glad grandpa left it to you." he said, as he leaned forward and begun to suckle on her breasts. Jen thought for a moment, wondering how exactly Zack would know about that. She quickly realized that, if they were in this incestous relationship, then she would have told her brother all about the stone. As Zack continued his ministrations, Jen frowned as she could hear a minivan pulling into the garage below. Their mother was home from taking their younger brother Mikey to soccer practice.
"Bummer," she said as Zack groaned, getting off the bed and quickly putting his clothes back on. A simple wish from Jen did the trick for him, earning a quick kiss on the forehead. "I hate that we have to be secret about all of this," she said, remembering that her conservative minded mother would flip out if she knew that her brother and she were doing these sorts of things.
"Maybe we don't have to," Zack replied, eyeballing the stone. Jen caught his eye and smiled, and handed him the stone. "I wish that our mother and everyone else in town knew that my sister and I were in an incestuous relationship, and that they were perfectly okay with it. I also wish that know one minds if we sleep with other people at the same time." Zack knew about his sister's promiscuity, and didn't want that stigma to factor into their relationship. A bright flash from the stone, and they assumed everything to be right as rain. Jen smiled, while Zack stood there, a perverted thought crossing his own mind. "I wish Mom would fall asleep for the next 24 hours, and that Mikey was in here right now." Jen cocked an eyebrow as there was a flash, and their 12-year-old brother Mikey instantly teleported into their bedroom.
"What, how did I?" Mikey looked around, amazed by the large bedroom of his older sister. He looked up at his brother and saw him holding a funny looking rock. "What's going on Zack? How did I get here?"
"Don't worry about it," Zack replied, ruffling the little guy's hair. "This will be over in a moment." Zack walked over to Jen and whispered something in her ear. She got a scandalous look in her eye but for a moment, until she smiled and simply nodded her head. Her own wishes had made her a nymphomaniac, completely unaffected by any inhibitions towards sex with other people. That had also apparently rubbed off onto Zack.
Zack then wished something into the rock, which Mikey couldn't hear. All of a sudden he grew stiff and his clothes simply vanished. At first he felt a stretching sensation as he grew taller. By the time he was done he was just as tall as Jen, but far more lanky.
Next he felt a heavy weight fall on his head, as long brown hair cascaded out of his scalp in long waves. He felt a sharp pain in his gut as his waist contracted, and a sickening pop as his hips widened. He felt his face change complexion, and looked down, surprised to find two ever increasing mounds appearing on his chest. Once he figured out what was happening, he reached down towards his crotch. Much to his surprise however, his cock was still there, firmly erect, and growing in size till it was nearly two feet long, just a couple inches shy of Zack's own impressive member. When Mikey felt around a little more, he found a small slit beneath the sack of his scrotum. He reached in and felt a deep hole, as he now had a pussy and a dick down below. Quickly there was a flash, and Mikey stopped exploring.
Miikaela shook her head and smiled at Zack, her brother and part-time lover, and Jen, her sister and other part-time love. It was hard sometimes, being a fully functional hermaphrodite with fully functional male and female genitalia, but as she had soon discovered, it provided her with some...unique...opportunities to this new love triangle of sorts.
