Pay off

I quickly snuck back round the house and ducked back inside. Molly was alone in the kitchen and no sign of Katherine, who must have gone upstairs to get ready for dinner. Perfect.

Very aware of the Alterscope and a couple of unusual pennies in my pocket I still needed to keep up with the excuse I'd told Megan, so to that end I entered the kitchen more openly. "Hey mom, I wanted to make up for upsetting you earlier. What can I do to help with dinner?"

The older redhead turned to me with a look of shock on her face. "You're offering to help? Are you feeling well?" She was acting more playful than mad at least.

"No really, I feel bad about before and I want to help."

She shrugged, but was smiling. "I'm good here, you can set the table though."

"No problem." I started gathering stuff to take out to the dinning room table while she turned back to the oven. "Smells fantastic!" She waved me off with a smirk, she knew how good it smelled.

While laying out plates and stuff Megan came down and gave me a thumbs up. "You good?"

"Well she was smiling and making a joke so I think I'm good."

Megan grabbed me and pulled me face first into her breasts while giving me a noogie. "I'm so proud of you, keep it up!"

I managed to pull free just before mom walked in carrying a steaming lasagna. "No roughhousing in the dinning room! How many times do I have to tell you young lady?!" Damn mom was defending me now? No, more like any excuse to give Megan shit.

Of course right then Katherine pranced into the room and had to add fuel to the fire. "This isn't your jungle gym you big ape." The look Megan gave our sister was murderous, but she didn't say anything in front of mom. Just patted me on the back and lightly pushed me towards my seat. Kath was sure to give me a sneer of my own as she sat next to mom and got the first slice.

Dinner was quiet after that at least. I was in a real hurry to get done but tried not to show it. Amber's parents would likely assume she'd just stayed over for dinner, or if they noticed the missing car that the girls had gone somewhere together. It happened often enough I wasn't sweating things, but I was impatient to get to the next step.

Not so impatient I didn't remember to help clean up after dinner. Molly's love of cooking didn't extend to that part of course and Katherine just ran upstairs knowing she wasn't expected to do shit, so it was just me and Megan as mom went back to her own room on the first floor.

"Sorry about that." As much as I really didn't like getting manhandled by my big sister I wasn't happy about mom chewing her out, at least not now she was being nicer to me. And I could hardly complain about having my face mashed in her tits again as distracting as it was.

She shrugged. "I really shouldn't be so rough with you. I did accidently break your arm that one time..."

I laughed while gathering the plates. "It was an accident, and by the time she was done yelling at you I was feeling more sorry for you than I was in pain."

Megan snorted. "That was nothing, dad really busted my ass when he got back into town." She looked suddenly more serious. "He always said I should be protecting you and Kath when he wasn't around. And I've been treating you like shit instead for some reason." Back in the kitchen she set the cups in the sink and turned on the water before wetting a rag to wipe off the table. "I'm going to make it up to you now though squirt. You'll see."

I nodded and starting rinsing the dishes as she walked off. She'd already made things up to me in ways I'd never tell her about. But it did make me feel a bit less guilty about the white flecks still in her deep blue eyes. Funny no one else had mentioned them.

.

Back in my room I was ready to finally get things going. Well almost, there was just one thing more that would make this perfect and add another experiment on top of the fun. I crept out into the hall and started making my way to Katherine's room as quietly as I could, and then Megan walked out into the hall from hers...

I swear she was ambushing me on purpose! Just in her sports bra and panties again she gave me a raised eyebrow. "I was just going to take a shower, you need something?"

Fuck. I needed yet another cover story. Think! "Say, uh, you said skin was no big deal right?"

"Yeah?"

I blushed, rubbing the back of my head. This was really really stupid. "So, uh, can I see your tits again?"

Megan laughed and I wanted to die. "So you want a good look before you go spank your monkey, is that it? Sure why not." She pulled off her sports bra and her gigantic breasts pulled free, bobbing and swaying magnificently. "Take a good look shrimp." She swayed her chest back and forth a few times. "Now go knock yourself out, I'm going to go clean up." So saying she continued into the bathroom leaving me in the hall stiff as a board.

I had already been hard just thinking of Amber sitting on my desk as just a penny, but now my erection was painful in it's intensity. I let out a breath as I heard the shower start up and kept going to Katherine's room. No light under her door, I figured after a hard day at practice she'd be out early. And her door wasn't locked either. Of course Ms. Perfect wouldn't bother, she'd probably relish the chance to rat one of us out for going in her room instead.

Worked just fine for me though, I opened the door just enough to make out the redhead in her bed before I brought the scope up and made another penny. Grabbing her coin up I made my way back to my room before Megan could catch me again.

Door locked and triple checked I set the penny with Katherine's sleeping face on it on the table as well then gathered the onahole and the magazine I'd copied before. Emerald to lock in the silicon magical girl toy and then ruby as well, holding down the button for a while first, to change Amber's penny into something more fun.

What I got was the same size and general shape of the anime girl but the look was all Amber. The figure even had her oversized tits on it's small frame. Only for some reason she was still wearing the figure's crown. She looked fantastic, though a bit odd without arms or legs to be honest. Still Jade was right, those bits would only get in the way. The only thing that wasn't to scale on the foot long figure was her cunt that covered the entire base, though it still looked very real. In fact, checking the original toy, the Amber figure's sex was way more detailed. Probably looked just like her original really. I couldn't wait to see how it felt wrapped around my dick. Almost there.

Using the emerald lens on the magazine, then with a long slow click of emerald and ruby, Katherine was now a porn mag. Just like Megan had been. She was just in her nightshirt and panties on the cover, that she'd been wearing in bed, leaving her long pale perfect body mostly exposed. I wasn't going to use my twin sister for sex, but damn if I wasn't going to enjoy seeing her naked while I jacked off into Amber's body.

Speaking of Amber, I picked her up and marveled at how the toy felt just like warm flesh. She still had the same look of shock on her face as her penny. Probably how she looked when she got zapped. Her relatively giant bimbo tits felt great to play with and amazingly her cunt was even already wet. "Self lubricated." I laughed. With a firm grip around her waist I lowered Amber and impaled her on my shaft in a long slow stroke. "Holy shit!" She felt amazing, and watching her body swell as she engulfed my dick was fucking hot as well.

I closed my eyes and started pumping her up and down my shaft as quick as I could, the magazine forgotten, in a frenzy of lust. Amber felt so good as she griped my dick like a warm wet vice. Before long I slammed her down fully hilting myself in her silicon body as I erupted inside. I filled her with spurt after massive spurt of jizz, I couldn't stop cumming. Amber's cunt was sucking everything I had to give out of me and more.

When I came back to earth I was still fully hard inside her small limbless body. No cum had escaped however. "You weren't kidding about the 'cum catching design' Jade, this model is fucking top quality." I wondered what the edgy store worker would think of my using my neighbor like a sex toy. She said she wanted people to explore their kinks openly. Maybe I'd bring up the topic with her, but sure as fuck not all the details.

I started slowly moving Amber up and down my dick again, still nothing leaking out, while I finally flipped Kath open. Instead of body builder poses like Megan my twin looked like she was doing a cheerleader routine. She got naked faster than Megan had oddly enough. I sped up my pace as I finally got to see a full nude pic of Katherine. She may not have our sister or mother's tits but she still had more than a handful, and her long toned body looked damn good.

Getting to the part where the wanton redhead on the page was thrusting fingers with both hands into her twat I filled Amber with another load. Looking down I realized her belly was starting to swell. That was a hilarious and really fucking hot place to put the cum reservoir. I'd have to be sure to tell Jade about that. Seeing Amber's swollen stomach also kept me hard as a rock inside her, I wanted to give her more.

I flipped Katherine open to her centerfold. Her eyes were rolled back in seeming orgasm and her mouth was open in a silent scream. She was holding her cunt open wide with one hand while she had her fucking thumb shoved up her ass. God damn that was hot. I stroked my free hand over the tits on the page as I pumped Amber for all I was worth.

Another massive orgasm, somehow stronger than the first, sent another load as deep into the blonde bimbo's artificial twat as I could. Right up where my shaft caused her head to swell, like I was cumming right into her brain.

I was finally spent, and had kept Amber more than long enough. As much fun as it would be to fuck her all night if I could, I couldn't just keep her like this. It was really fucking tempting though.

I had to hand it to Jade, she knew her shit. Not a bit of cum flowed out of Amber's vag as I pulled out. In fact my dick was as clean as when I first stuck it in her. Weird. "Damn that's handy." Setting the Alterscope to amethyst I then ran my hand over Katherine's face one last time before folding her magazine back up. Lets see if she suddenly feels comfortable with nudity like Megan now. I could wish she'd be less of a bitch.

Poking my head out into hall and no sign of Megan. Good. I slipped the porno mag into my twin's bed then back at the door just opened enough to see her. Zap! The redhead was sprawled out in her bed again none the wiser. Back downstairs and out the front this time, no way was I trying to sneak past my mother's room with a onahole in my hand. Penny where I found it, and with a click the pink monstrosity was back like it had never left.

Now for the really tricky bit, I set Amber's bloated onahole body down next to the car and backed up to the front door. With a click she was kneeling on all fours, having limbs again for the first time in hours, then clutched her stomach with a moan that sounded more sexual than pained. She reached a hand out to her bumper and I heard her whisper. "There you are. What the hell just happened?" As she got up I saw her in profile briefly as I sipped back inside. Her stomach had been swollen out just like the onahole's.

I had to run up to bed and get off again before I could sleep. I couldn't wait to see what a belly full of my spunk did to Amber.