Jeff could feel Megan's legs loosen around his waist, his still throbbing member still buried to the hilt in his step sisters soaking snatch,her walls and womb coated in his baby makers.
Jeff smirked up at his sister as he wove his hands from around her back "oh no sis, were not done here till your belly is ripe" he growled into her ear, emphasising the word ripe as he cracked his hands over her soft ass.
Megan let out a squeal as she threw her head back, before letting out a lustfull groan, looking down at Jeff while biting her plump lip "mmmmmmh, is that like, what you want from me bro, to like, come home, see me and mom with your brats on our tits, like, maby another in our cute little ovens?" She said, using one of her hands to rub along her flat stomach, before wrapping her arm around Jeff's neck, clenching her legs tight around his hips as she began to rock back and forth.
Both half sibling kept this up for hours, once or twice Gloria had re-entered the livingroom, on the way to the kitchen to grab a craving snack, but Jeff and Megan were too occupied to either acknowledge her or care, their laboured breaths, gasps and moans filled the house, eventually the two rabbits came down from their lust, hearing Megan's stomach let out a high pitched growl.
Megan let out a giggle as she stroked her hands over her new bulge, with the ammout of times Jeff came inside her, her poor womb had no choice but to stretch and expand to the size of someone four months pregnant to contain all Jeff's baby batter "like I gotta say Jeff, you sure know how to make a girl work up an appetite, and like, no doubt my hunger will only get bigger when your brats start to grow, mmmmmmh, like won't that be nice?, seeing me and mom hauling around big round bellies, showing them off to the neighbours, getting you to soothe our aching backs and swolen tits, like, I can't wait" she whispered as she got up from the sofa, gently caressing her new bulge as she practice waddled down the hall and into the bathroom, before Jeff heard the spray of the shower turn on.
Suddenly Jeff remembered what Gloria did when her wet cunt was packed with jazz, she simply forced it all out, making her belly flat once more, but Jeff wasn't going to have that, he got up and Dashed into his room, not caring to put clothes on, he then sat at his computer and pulled up the Chronivac.
Jeff's fingers clacked accross the keyboard as he entered Megan's settings, Grinning he set to work. First of all he made her even more fertile that Gloria, her womb would be every one of his babymakers paradise, her hips were wider, almost as wide as the doorframe of their house, her back was stronger and her breasts now set to a healthy G cup setting, sitting perky and firm on her chest, but then came the fun part, with all Megan's teasing of being knocked up the same time as Gloria Jeff decided to grant her wish.
As Jeff entered the bathroom, he could see Gloria's silhouette behind the showers curtain and steam, Jeff watched and waited for the moment of truth as Megan let out a groan, doubling over, clutching her belly as she stumbled out of the shower, now pressed against the wall her eyes wheeled around in confusion before she let out a low moan.
Jeff watched in awe as the second family member today blew up like a balloon before his very eyes, Megan's belly pushed outwards at a rapid pace, her womb becoming round and taught as it filled with Jeff's offspring, Jeff's hardness only grew as he watched his stepsister fill with his kids, until her mammoth middle came to a halt, Megan was left panting and sweating as she held the wall, looking down at her quadruplet sized belly, her skin red and sensetive, and her tits dribbling thick white milk, it was then she noticed Jeff....