Cassie the Cumflation Slut

"Oh my god! Jenny! You didn't say he was THIS big!"

Cassie, your girlfriend's best friend, only heard good things about you from Jenny. About how... productive you are, especially in the bedroom. Of course, she told you only good things about Cassie. Oh she'd brag about how hot she was, she could be a porn star, especially with her massive tits... but for some reason she didn't show you any of her pictures. You could only idly wonder if she bragged about your cock with the many MANY dick pics she took for herself.

Then, that fateful weekend came about. Jenny invites Cassie over, but never told you. She only told her to walk in topless, and told you that she had a surprise waiting for you. Given the next two hours of fucking, and Jenny having to cradle a beachball of a belly filled with cum, you figured that's what it was.

That is until Cassie walks into the room. Short denim shorts, pink lacy panties she's purposefully pulled into view and completely topless. This you take in stride, Jenny's brought home her share of slutty friends before, after all, every one of them leaving with a huge gut full of your semen. A couple them, though, despite your girlfriend's warnings, dared to suck you off, only for them to--

Cassie noticed your cock. You noticed her tits. Your still very hard, and very much wet with cum and pussy juices, 12 inch cock, with balls to match. She has huge tits, like fat and soft watermelons. That's when she hollered out what she did.

Coming up from behind, Jenny draped an arm over Cassie's shoulders, walking her hot blonde and incredibly busty friend over to you. Cassie's mouth hung agape as they approach, Jenny's massive belly sloshing with your cum.

"Cassie, I thought it was high time for you to meet my boyfriend," she says, very casually gesturing towards you... and your huge dick.

"W-wait, is this why you look preg--" Cassie tried to speak, but Jenny cut her off.

"I'm not pregnant. Just extremely cumflated." Jenny interrupted, a hand moving to squeeze one of Cassie's huge breasts, "And you can be too. He loves huge tits." That last sentence she basically whispered into her ear, except loud enough for you to still hear. Which she knows, as she winks at you.

"O-oh. Well," Cassie's face suddenly turns red as she looks at you, then bites her lip as she looks at your cock, "Mind if I give him a whirl?"

"Go for it. I want everyone to at least try him once,” she answered, rubbing her belly, “Mm, the results are quite satisfying.”

Well that did the trick, you think. Not that you had, or wanted, any say in this. Cassie shrugged off your girlfriend’s arm, sashaying over to the bed, her eyes fixated on your thick pole. She quickly strips off her shorts and panties, revealing her wetness was already soaking her thighs. Climbing onto the bed, she gives you a wink as she makes her way over to you and straddles you. Slowly standing up on her knees, she takes one hand, wrapping it around your cock, moaning quietly as a fat spurt of pre launches itself onto her tits. Rubbing your cum into her tits, she doesn’t seem to notice they were growing a little bigger as she guides you into her hot and incredibly wet pussy.

Nearby, Jenny watches on, one hand rubbing her lap-filling gut and the other squeezing itself underneath to finger herself. She’s always loved to watch, and she follows your eyes signaling towards Cassie’s fat tits with a nod. Oh good, she noticed them growing, too.

Cassie lets off a moan as she slowly takes you in, inch by inch, her swollen pussy slowly massaging you and eliciting a moan of your own. Spurts of pre-cum fire off into her, a small curve already forming over her stomach as she finally takes you in completely. Then, she begins to start to thrust her hips and bounce up and down your shaft, her wet pussy coaxing still more pre out from you as she goes. Her belly starts to take on more form now, her tits still swelling fatter as they shake and bounce from her fucking you.

“Ohhh fuck, you’re already filling me up. Oh gods, oh fuck, who knew it’d feel this goooooooood!” she cries out, apparently her first orgasm already hitting.

Looking over, you see Jenny doesn’t seem to mind, biting her lower lip and seeming to be really getting into watching you two fuck.. and Cassie grow. Cassie sure as hell seems to be getting into it, bouncing faster up and down your huge cock, massaging you as she goes and swelling even bigger now, already looking pregnant.

You instinctively reach out to grab and squeeze Cassie’s tits, which seem to have finally settled on their basketball size, shaking and jiggling with the added fat. It’s a welcomed touch, one of her hands placed over yours and encouraging you to grope and squeeze to your heart’s content, rocking harder as a result. Her other hand wanders to her swelling belly, rubbing it as swells ever so slightly fuller and rounder with your pre-cum. Your other hand rubs at it as well, feeling her grow more and more turning you on.

Your thrusts meet with her bouncing as you start climb towards an orgasm, your hands moving to Cassie’s hips. Off to the side, Jenny moans as she watches, drinking the entire scene in.. and masturbating furiously. At least, as best she can around her beachball of a cum belly.

“Oh fuck, just like that, cum in her, baby. Make her huuuuge!” she cries out, Cassie soon joining in.

“Fuck yeah, baby, make me bigger. Pump your huge load inside of me, I want it all, every… last… drop!” Cassie slams down hard on each of those last three words.

Apparently, that was all you needed, your back slightly arching as you let off a load moan and climax… right into Cassie’s wet, waiting pussy. Fully sitting on you now, her hands both go to her stomach as it begins to expand in earnest now. With how large she got just from pre-cum, you decided to make an executive decision and, your dick still inside, push her back and to the side. With Cassie now laid on her back, you thrust inside of her as you continue to pump even more cum into her spasming pussy.

Your fingers glide over her belly as it inflates with your seed, easily doubling in size within seconds. Then it’s triple in size, surpassing Jenny’s massive gut already. The sounds of pleasurable gasps are heard, your eyes pulled to your girlfriend as she’s fingered herself into yet another climax.

“Oh my god, I’m so full, holy shit. Fuck fuck fuck, I’m so big...oooh fuck, don’t you dare stop. I need more cum, I need so much more, ah fuuuuck!” Cassie cries out, another orgasm rocking her as she continues to expand. Her belly stays round and the skin is soft, soon looking like she swallowed a bean bag chair. It sloshes and churns as your thrusts continue, letting you ride out the orgasm as you pump her with still more.

You roll her to her side, her massive belly sloshing loudly as it sloughs onto the bed, eliciting another orgasmic moan from Cassie. Her leg is lifted and resting against your chest, your huge cock slipping in and out of her warm lips even as it continues to squeeze and coax more cum from it. Expanding wider, fuller, Cassie’s belly takes over the rest of the bed, reaching the edge when your orgasm finally starts slowing down.

“No… no, more, I need more!” Cassie whines, despite her several orgasms. Her sloshing belly inches over the side of the bed as you finish, giving her swollen and well-fucked pussy a couple more good thrusts before pulling out.

You still have room on your side of the bed, so you ignore slight groans and creaks it’s making from holding you and half a ton of cum-filled belly attached to Cassie. Turning your head, you see Jenny slouched in her chair, melted into an orgasmic mess.

“Phew,” you comment aloud, “Well, that was fun.”