Description
"Okay, you've had like, fifteen whole minutes to rest already" Tiffany pleaded, arching her back as she beckoned me back to bed, "I need you filling me up again- I need you making me bigger again."
"We've already had sex like, thirty times just this evening, I'm just tired," I pleaded, staring with concern at her distended belly, "You've got to be wanting a rest too, right?"
"Mmm, but you don't get tired anymore," she teased, pressing together her plump pink lips in a knowing smile, "Not since I gave you those pills that give you enough stamina to fuck me twenty four hours a day and, my favorite part, an endless supply of thick, creamy, cum to gush into me every time we do it. Don't keep me waiting- I don't care if you rip these pants off me and screw me again, or if you force me down on my knees and have me suck your huge cock for the next six hours, I just need more!"
"Well- I mean- are you sure that you do? -at least for right now?" I asked, doubtfully. Before tonight Tiffany had been proud of her smooth, toned tummy. Now, after a big dose of something I really should have read the instructions on before she dissolved it in my drink, her belly was swollen obscenely, so massive her knees nearly bucked at its immense weight, "Wouldn't you rather get some sleep? We can always have some more fun in the morning if you're still feeling up for it."
"Oh, I get it; you're just worried about me getting too big, aren't you? That's so sweet," my girlfriend giggled, giving her body a shimmy that left her middle audibly sloshing as the gallons of cream I'd already pumped into her body surged like an angry tide inside of her, "Is it how massive you've made my round little tummy that's got you afraid? Or the way these stretchmarks are just blossoming across my skin as you make my belly get tighter and tighter every time I make you come inside of me- are you worried you're going to make me burst? My belly button does feel ready to pop- just one more milky gusher from you and I'll go from an innie to an outie- won't that be fun? Or maybe it's my boobs you're worried about; I'm sure you've noticed they've been swelling up like a couple of overripe cantaloupes for the last hour. Don't be afraid- it's just that all this cum is making my hormones go into overdrive- I can't explain it, but I'm sure this is just a taste of what the twins have to look forward to over the next few hours."
"Okay- I know you think- I know you're fine and I'm not worried that you're going to explode, even if your belly is starting to look awfully overloaded," I tried to reassure her, "But what's the harm in waiting a few hours and getting some sleep?"
"Well, for one thing, I'm not the one that needs to worry about exploding," she murmured confidently, "Just look at your balls; they're already churning with cum and you're rock hard already. If you don't find a willing receptacle for that huge load soon, they'll be ready to pop in another few minutes- I'm really the one doing you the favor here."
Tiffany was right, just while we'd been talking, they had swollen to the size of softballs, tender, heavy, and achingly full. I glanced at my adoring girlfriend; she gazed back with adoring insatiability.
"Mmm, that's a good boy," Tiffany purred as I bent forward and tugged her yoga pants down along her sleek thighs, "Now press me into the bed and fuck me until I'm so engorged with your cum that I can hardly move, and then let me ride you- I want to see if you can make my belly bigger than the mattress by sunrise. Come closer; take advantage of your horny little cum-slut girlfriend, and don't stop giving it to me when my belly starts creaking like I'm ready to blow!"