He fills Enzo's stomach

“Time for a change of pace,” Marcus said, placing his hand on Ezzy’s forehead. “It’s okay, slut. You can pass out now.” With that he shoved her away, sending the limp bimbo tumbling backward onto the floor.

The next time Enzo slid his mouth down Marcus’s rod to collect some “lubricant” from his mother’s face, he found himself kissing the Alpha’s oozing tip.

"Gwuh?" While slurping up some of the pre-cum, he turned his head enough to see Ezzy's body crumpled on the floor. "M-Mom! Are you oka--UMGPH! MM-MMGH!"

Without warning, Marcus grabbed the Local boy's head with both hands and shoved his massive cockhead into his open mouth. Slamming forward, he only managed to sheathe a few inches before reaching orgasm.

"Get ready--Ungh," Marcus growled, holding Enzo in place as his balls clenched.

The first thing Enzo felt was the warmth. A wave of heat crept its way down his stretched-open throat, growing with each pulse of the apple-sized cockhead that was filling his entire mouth. He swallowed again and again, but couldn't keep up; soon there were hot, sticky blobs of jizz pooling on his tongue, then splattering down his chin.

Marcus didn't let up, refusing to give the struggling boy an inch. He even took a step forward, trying to get a better angle to pump cum down Enzo's throat. Once he had him between his legs, he managed to fit another inch down the tight, convulsing passage.

Meanwhile, Enzo's mind was blank. He didn't have time to think about the taste, or even the amount. He simply gulped it all down, knowing that the alternative was to drown in semen... Or face the wrath of his mother. In that overwhelming moment, failing to swallow the Alpha's load simply wasn't an option.

Ezzy was watching her son, if only through bleary, half-closed eyes. A weak smile appeared on her face as Enzo's throat and cheeks bulged, and she reached out to place a hand on his thigh--But instead it found her son's cock. It was still half-hard, and it leapt further to attention as she wrapped her hand around it.

This'll be good for him, she thought. Pleasing Alphas should feel good. If I can help him with that, help him be a better Local... That's my duty as a mother, right?

With that thought in her barely-conscious mind, she began to stroke Enzo's shaft. She put all of her remaining strength into moving her wrist, and soon she was jacking her son off almost as fast as Marcus was plowing his throat.

The result was far less impressive, however. Within a dozen strokes Enzo was cumming, squirting a more human-sized load onto his own legs. His eyes rolled back and he trembled with orgasm... Which turned out to be his downfall, as he failed to keep up with the thick seed being pumped down his throat. It spilled out of his mouth in waves, pouring down his body and coating him in a thick layer of white slime. The ordeal soon ended, though, as Marcus's balls finally ran dry.

"Fuuuck... Not bad, kid," Marcus groaned, pulling his cock out and taking a step back. The half-hard member slapped across Enzo's cheek with a wet thwack, still connected to his lips by several viscous strands of spit and cum. "Couldn't keep it down at the end, but still... Not bad. You've got a hot bimbo mom, a big-titty girlfriend, and you can suck dick? You're pretty freakin' lucky, you know that?"

"...Mph..." Enzo tried to speak, but his mouth was still full of jizz. "Guh... I... I'm..."

"Don't apologize. That was pretty good for your first time--Oh, shit! Good thing you stopped swallowing, huh?"

Enzo looked up at the Alpha in confusion, before following his gaze downward. With as start, the Local boy realized that his stomach was distended. He had a bigger, rounder belly than he'd woken up with, and it was even pushing his T-shirt up ever-so-slightly.

"Man, who knows what would've happened if I'd actually been able to get good'n'stuck in your throat... I've never seen a Local burst before," Marcus laughed. "Shit, I guess I should've given you some of the pills. Think I've got 'em here somewhere..."

Enzo stared at his swollen, cum-splattered belly for a few seconds, before coming back to reality. "Wait, what pills--Mmph!"

"Here, hope you've got room for these." Once again, Enzo's mouth was filled mid-sentence... But instead of cock, he was fed two small red pills. "The clinic threw 'em in free with the SpermiZan Plus. They'll loosen you up a little, so you can fit more of my cock and jizz and stuff. Plus, y'know, you won't die."

"Thank him," Ezzy hissed, getting up off the floor.

"Thuh... Th-thank you, sir," Enzo stammered, taking off his shirt to wipe up some of the cum. All the while, he couldn't stop staring at his own midriff. Is that ever gonna go back to normal? It should, once my stomach empties out... Unless he fills it again...

"Marcus, do you by any chance have more of those pills?" Ezzy smiled hopefully at the Alpha. "I would hate for you to think you have to be careful with me--"

Marcus laughed. "You're a good slut, but nah. I told Gary I'd use you once and then head out with Enzo. C'mon, kid, let's go!"

Enzo's hand shook as he accepted Marcus's help and got up off the floor. Before he knew it, he was being led out of his bedroom.

"Where are we going? Allie's place?"

"Eventually, yeah. She'll be in school for a few more hours, so there's no rush."

Without any further explanation, Marcus dragged Enzo outside and into the passenger seat of his convertible.