Jack had been tinkering with the collar for a couple of days, testing it on both Ava and Abby, but it was slow going. It did seem to improve his affinity with the collar using it more on them, but only a little. For example, Ava could now change her whole face to look like someone else at once, but couldn't change more of her body at the same time. Jack was growing frustrated with how slow the progress was and Abby seemed to notice.
"Hey, can I take control of Ava for a bit?" She asked.
"Why?"
"I have an idea, it's a surprise, but I think you'll like it," Abby replied with a sweet smile. Jack looked at her for a moment trying to figure out what she was planning, but eventually gave up and said yes. He made sure Ava would follow all commands Abby gave her as his own, while still protecting himself from any chance of them turning on him. He loved them both dearly, but he couldn't risk it.
Abby took Ava upstairs and into the spare bedroom, which had now become Abby's bedroom. Although she never actually slept in there, it was just full of her stuff. Jack waited downstairs for almost an hour and was about to go and check on them when Abby appeared in the doorway.
"What do you think?" She asked, gesturing to her outfit. He looked her over and felt his cock stir as he looked at her. It wasn't that it was a very revealing or sexy outfit, but it was typical Abby outfit, which to Jack looked incredible. She was wearing fishnet stockings with shorts so small they were almost hot pants, a vest top that showed off generous amounts of cleavage and one of her heavy chokers. He'd seen her in similar outfits before on a way to a gig or a concert. Her make-up was done flawlessly, with long winged eyeliner. She was unbelievably beautiful.
"You look great, are you going somewhere?" Jack asked.
"How about right here?" Abby asked, climbing onto the sofa and straddling Jack. She wrapped her arms across his shoulders and around the back of his neck before kissing him passionately. Jack didn't question it, he just kissed her back as she pressed her body closer to his. Abby gripped the bottom of his t-shirt and began to lift, breaking the kiss to lift it over his head.
"Where's Ava?" Jack asked in the momentary reprieve, but Abby ignored him and kissed him again. She began to grind her hips against him, causing his cock to harden. She grinned as she felt it pressing against her through the material of his pants.
"Look who's come to play," she teased as she climbed off him and sank to her knees. She grabbed his belt buckle and undid his pants, pulling them down. Jack lifted his hips so she could remove his pants and boxers, freeing his erect cock. Abby looked at it with a smile before reaching forward and grabbing it. She gently stroked it as she aimed it towards her and engulfed the head in her mouth. Jack groaned as her slick tongue glided around the underside of the swollen gland.
"Oh Abby..." He groaned.
"Yes?" Abby asked from the doorway. Jack's eyes shot open and he looked over to see Abby standing grinning at him. He looked down to also see Abby kneeling between his legs sucking his cock.
"What the fuck?"
"What? Aren't you enjoying me sucking your cock?" Abby asked from the doorway. It took a moment for Jack to realise that they'd somehow used the collar to make Ava looked like Abby.
"How?"
"Lots of small changes, it seems to have worked," Abby replied. Jack looked at her neck and saw a thick choker, like the one the Abby between his legs was wearing. They'd purposefully done it to cover up the collar so Jack had no idea which was the real Abby.
Jack watched as Abby walked from the doorway and pulled the other Abby from between his legs. They stood next to each other and smiled at Jack. He looked at them trying to find any difference, but they were completely identical, even their clothing was the same. His cock twitched in excitement.
"Does someone like the idea of fucking twins?" One of the Abby's asked. Before Jack could reply, she grabbed the other Abby and they began kissing passionately. It was the hottest thing Jack had ever seen as he saw their tongues fighting one another for dominance. They began undressing each other, first removing their tops before each taking turns to remove the others shorts.
They went back to kissing, only wearing their fishnet stockings, while grabbing and groping each other's breasts and ass. Jack watched their hands roaming each other's bodies as he stroked his cock. He couldn't believe how hot this was. One of the Abby's broke the kiss and began kissing down the others neck. They moved along their collarbone before moving down to their chest and taking a nipple into their mouth, causing the other Abby to gasp in delight.
"Do you like watching my sister suck on my nipple?" The Abby still standing up asked, playing into the idea they were twins. She grinned at Jack as his cock swelled at the thought.
"Yes," Jack groaned as he watched the other Abby move to the other breast and lick and suck its nipple.
"Mmmm, Annie!" The standing Abby groaned. Jack was confused for a second before realising she was calling the other Abby, Annie. It made sense if they were twins, they might look the same, but they'd not share the same name.
"Annie? I like that," Annie replied, kissing down Abby's stomach. She made her way downwards, kissing gently as she moved over Abby's smooth mound. Abby groaned as Annie finally reached between her legs and licked along her wet slit.
"Close your eyes," Abby told Jack. He did as he was told and he heard some shuffling in front of him. "Now, when you open them, tell us who is Abby and who is Annie."
Jack opened his eyes and looked down at the two women. He momentarily forgot what he was meant to be doing as he took in the scene. They had moved into the sixty-nine position and both had their heads between the others legs hungrily licking at each other's cunts. Jack just watched for a minute until the one underneath looked at him and stopped licking.
"So, who is who?" She asked before returning to her task of pleasure her twins pussy.
"Ermmm, are you Annie?" Jack asked, uncertain. She just winked at him and continued pleasuring the pussy in front of her. Jack was incredibly horny and felt left out. He got up off the sofa and moved behind the woman on top.
"Well, that makes you Abby, I'm going to fuck you," Jack told her.
"Finally!" The woman replied, wiggling her butt a little as invitation. Jack grabbed his cock and lined up with her incredibly wet entrance before pressing in. She was soaked and his cock slid in to the hilt easily. Annie leaned up and licked his balls that hung by her face before suddenly moaning as Abby sucked hard on her clit.
Jack began to thrust into Abby hard and fast, he was so turned on and they'd teased him so much he couldn't help himself. She moaned loudly as he began to pleasure her insides with his rock-hard member. Annie was also moaning between his legs which just turned him on more. He thrust into Abby for a few moments, enjoying how wet and tight she was when he had an idea. Suddenly he pulled out of Abby and grabbed his cock, pointing it downwards as he moved his hips.
Annie was laid underneath the pair moaning as she watched Jack pull out. She wondered what he was doing for a moment until she saw his cock coming towards her. Opening her mouth, she accepted his solid meat as he pushed into her mouth. She could taste Abby on his cock and the sensation of him fucking her mouth while Abby licked her clit sent her over the edge. She moaned loudly as her body shuddered, her orgasm gentle but incredible all the same. Jack continued to thrust into her mouth until her orgasm subsided and then he pulled out.
"Let's change position, I want to see you licking your sister's cunt," Jack told Annie. Annie slid out from underneath the two and the women swapped places. Annie kneeled in front of Jack while Abby lay down in front of her with her legs spread. Jack slid his cock into Annie who was just as wet as Abby had been, while Annie began to lick Abby's pussy enthusiastically.
He began to thrust into Annie, marvelling at how even her pussy felt the exact same as Abby's. He drew back his hand and slapped her ass hard, causing Annie to groan in pain and pleasure. It didn't really tell him much about whether it she was the real Abby, since both women enjoyed being spanked. He heard Abby's moans growing more frequent and picked up his own pace, pounding into Annie hard and fast. She groaned at the sudden pounding, gripping Abby's thighs tightly while she continued to diligently pleasure the cunt in front of her.
Abby was the first to cum, gripping Annie's hair as she pulled her face into her pussy. Annie continued to kiss and lick, assaulting Abby's clitoris as she pushed her into orgasm. Abby moaned loudly and shuddered just as Annie had done as she rode out her orgasm. She pushed Annie's head away as the pleasure became too much and lay back enjoying the post orgasm bliss.
Jack stopped watching and returned his attentions to Annie, he wanted to cum badly and felt his orgasm approaching. He slammed into her hard and fast as she began to cry out in pleasure. She shook violently beneath him, her legs trembling uncontrollably as she came hard around his cock.
