Two couples fuck frantically

Enzo's mind was blank as he humped his girlfriend's mother, pumping brainlessly into Susan's gigantic ass. His bloated, cum-stained stomach slapped against her with every thrust, Marcus's leftover jizz mixing with the sweat pouring down Enzo's skin.

"Oh... God... Fuck," the older woman moaned, bracing herself against the lawn. "Y-you... You're not big, but--Ah!"

She was cut off by another flurry of thrusts; Enzo was leaning forward now, his feet lifting off the ground. Soon his balls tightened, and he shot another load into her... But that didn't slow him in the slightest.

"Wha--You're s-still going?" Susan peered back at the boy, a shocked expression on her face. "D-did Marcus give you s-something? Pills?"

Enzo didn't reply. In fact, he didn't even know why his libido was going into overdrive. Marcus hadn't given him any ****, and the young Local certainly hadn't enjoyed spending the afternoon as a cocksleeve... Not on the surface, anyway.

I need to cum... God, I need to cum again! Why am I so fucking horny? After four orgasms, his balls were aching almost as much as his swollen belly... But he kept thrusting, squirting even more thin, watery loads into Susan's pussy every few minutes.

Inside the house, Allie was bathing in a very different kind of jizz. She was lying face-down in her mother's bed, taking Marcus's foot-long cock up her ass. He had already used her other two holes, and the resulting cumshots were splattered all over Susan's bedsheets. It pooled beneath Allie's body, coating every inch of her skin; Marcus was barely spared from the mess himself, as he thrust into his girlfriend.

"F-fuck... You're s-so big, so... So..." Allie cried out, loud enough that her mother and Local boyfriend stopped rutting (if only for a moment). Then she continued, her voice shaking: "Marcus, you're a god... My god."

The Alpha only groaned in response, trying and failing to stuff his entire rod into the pregnant girl's asshole. Frustrated, he roared and grabbed her by the hair, pounding her even harder against the sticky sheets.

"I'm gonna make you my cocksleeve," Marcus growled, now nearly ten inches deep. "Then I'm gonna make you my breeding sow."

"I--I'm already pregnant, m-muh... My love," she moaned, almost apologetically.

"Right, right..." Without slowing down, Marcus leaned over to the bedside and grabbed two plastic bottles. He grabbed one pill from each, then put his cupped hand over Allie's mouth.

She swallowed the pills without hesitation, gulping them down before looking back at her boyfriend. "What was that?"

"First one was some crazy genetic shit," Marcus explained, a smile on his face. "Brand new, super experimental... I had to sign away your right to sue. Don't worry, I made a deal with Gary."

"Well, okay. If... Oh, fuck... If he's f-fine with it... What does it do?"

"Your baby's gonna be mine," he replied, stroking Allie's belly. "My DNA, overwriting Gary's. Pretty cool, huh?"

"That's... Wow. Really? How?"

"No idea. There's definitely gonna be side-effects, but don't worry about that too much," Marcus chuckled. "The important thing is, you're having my child. You're gonna be mine, Allie. All of you, forever."

"Wait..." A glint of hope appeared in Allie's eyes. "Do you mean..."

"Don't get ahead of yourself, babe. For now, just worry about taking my cock and having my baby."

Allie took a deep breath, then nodded. But after a few moments, she looked back at her boyfriend. "What's the second pill?"

"StretchOut," Marcus replied, grabbing her ass with both hands. "Same thing Enzo's on. I don't want to break my new baby momma, but I'm not holding back either." With that, he plunged every inch of his massive shaft into Allie.

The cum-stained pregnant girl arched her back, her lips parting in a silent scream. But as she got used to the intense feeling of fullness, pain quickly turned to pleasure. She smiled, leaning into her Alpha's thrusts.

"I'm your 'cocksleeve...' And your... Your 'breeding sow...' And anything else you want me to be. Forever."

"Good girl," Marcus hissed, pulling out of her ass. "Clean me off, then spread those legs. I'm gonna make sure this baby's mine, no matter how many loads it takes--"

A loud squealing noise outside the window drew his attention. Peering down into the front yard, he saw that Enzo had switched from Susan's pussy to her mouth, facefucking her so hard that the older woman's nose was knocking into his cum-filled belly and making it wobble ridiculously.

"What a trooper," Marcus laughed, as Allie began licking his huge, sticky cock. "Make sure you get every inch, babe. Take your time... We have all night."

"Mmm..." Allie closed her eyes, feeling more content and accomplished than ever. I can't wait to tell my friends about this... They're gonna be SO jealous.