Grab some water, to speed things up

From Create Your Own Story

With your balls aching with your sister taking so long, you run and grab her a glass of water, to speed things up. By the time you return with the water, she's only just finishes the first bottle. Giving her the glass, she quickly starts gulping down more Baby-Makers.

Of course, you can't wait any longer. Just watching her let herself unleash more and more eggs is driving you crazy. As she's halfway through the third bottle, you quickly rip off her pants and panties before thrusting deep inside her. "You couldn't even wait for me to finish, could you?" she ask.

As you thrust more and more, she quickly polishes off the third and fourth bottle but you feel this is still taking too long. As she opens the final bottle, you quickly snatch it from her grasp and force the bottle into her mouth. Taken by surprise, she starts swallowing as many pills as she can.

By the time she's finishes the bottle, you can feel her body going into overdrive. Her nipples have swollen to an unnatural size and are starting to produce small amounts of milk. Her pussy is becoming tighter and wetter, with her body almost asking you to knock her up. That thought alone makes you lose it.

Your first orgasm fills her uterus entirely, but you aren't even close to done. Although your massive testicles are briefly deflated, it takes mere moments before they're strained to the max again, and you continue.

As you start pounding her, you look into her eyes and see that she as already taken herself to a place made of complete pleasure. She moans again, eyes full of desire, and looks you in the eye as her hand kneads her own breast desperately. With a cry of "Valerie," you let another load loose, swelling her womb again. As she feels the pressure of your cum, she responds in kind, splashing more ecstasy from her pussy that drips onto the machine and the floor.

Up and down, over and over, you pump your sister's pussy, pushing her back against the washer with each thrust. You can barely breathe as she hungrily sucks at your face, legs once again wrapped around you to pull you in. With each tide of cum, a bit drips out into her pyjamas or onto the floor, but the majority stays locked up in her already burgeoning womb. Occasionally you break off the kiss to whisper something into her ear or motorboat her chest, which brings her a laugh between all the deep moans and gasps.

By the fifth orgasm her midsection has begun to visibly distend, and you can detect each egg as it appears and is immediately swarmed with sperm. "You're probably full of hundreds of babies, Val," you whisper, and she cums again at the thought. Her pants sag with the weight of all the leakage, and yet you continue, fucking and fucking for hours.

Finally you stop and withdraw, and her hand reaches down to hold herself closed once more. "I'm... so fucking full..." she breathes, even as jizz oozes out from between her fingers.

By this point, you can tell she's been impregnated more than twenty times over. There's so many fertilised eggs in there, you can't accurately count them all. But she's also swollen to an much larger size. Almost as if she's trying to hide a few basketballs inside her. If you continue you fill her up now, there's no doubt she would pop. Or you could wait a few months and let your demonic offspring do the job for you, and let her suffer a mix of pleasure and pain until then.

• Continue until she pops from jizz
• Skip ahead several months and wait for the babies to do the work for you

You are possessing:
12th Grade Boy with large-apple-sized balls and a 12-inch cock