Author's note: In this alternate timeline, not much is different from the current world with one notable exception. A subset of males have evolved the ability to conceive and bear children (known as "fertility-capable men" in polite company, "breeders" in more common usage).
***
Andy entered his 8th month with sore feet, a huge belly that threw off up his center of gravity, and tits that had grown into solid B cups. He was also horny all the time but struggled to reach his cock over his swollen stomach.
His housemates/the potential fathers were supportive, though Brian had a girlfriend now, Chase was busy trying to pass his classes, and Jake's rugby practices took up a lot of his time.
Andy was napping on the couch one afternoon, wearing just his boxers and support shirt (essentially a bra, but made for breeders) since the roommates were all gone, when he was awoken by a knock on the door. Figuring it was yet another instance of a roommate forgetting their keys, he stumbled with great annoyance to the door.
Andy threw open the door and was greeted by two huge, beefy guys he vaguely recognized as being on Jake's rugby team. They both looked at him and uncomfortably looked away as Andy looked down and noticed his outfit with equal embarrassment.
"Well fuck," Andy said grabbing a coat from the coat rack and quickly wrapping himself up.
Blushing slightly, one of the guys introduced himself: "um, I'm Dave and this is Joey. Jake had bought some beer for after practice but forgot it and sent us to pick it up."
"Ah. Well kitchen is down the hall to the right," he said inviting them in and pointing.
As they walked down the hallway, Andy felt a stirring in his boxers as he noticed the strong shoulder and back muscles visible under both of their shirts. They had round bubble butts and at 6'2 and 6'3" both seemed like they would have no trouble working around Andy's added baby heft.
He started sweating under the coat, both from the heat and being turned on, so he threw it off and went down to his room, figuring the guys would find the beer and make their way out. Andy grabbed his phone and saw a text had arrived from Jake: "btw sent some guys to pick up some beer". Andy rolled his eyes at the time stamp, which was about 30 seconds before they had knocked on the door.
Down in Andy's room, he had taken off his support top and was gently massaging his breasts, enjoying the sensations from his newly sensitive nipples.
Lost in pleasure with his eyes closed, Andy was jolted back to awareness by a clearing of a throat at his doorway.
Dave was standing there, eyes locked on Andy's tits. Andy wasn't sure how long Dave had been watching, but the bulge in Dave's athletic shorts told him it was more than a few seconds.
"Yes?" Andy said, resting one hand on his nipples.
Dave swallowed hard, "we uh, couldn't find the beer and thought it might be in Jake's room."
"His room is upstairs on the left," Andy said, his hormones surging as he continued locking eyes. Andy raised his eyebrows and looked at the substantial bulge in Dave's shorts.
Dave approached Andy, who took Dave's large hands and placed them on his breasts, causing Dave to whisper a small moan of "damn!"
Andy showed him how to gently rub the nipples and cup his soft tits. Andy then moved his hands to pull down Dave's shorts. The elastic band caught on Dave's erection and, when Andy pulled it free, the 8" cock bounced hard against Dave's stomach.
Andy's mouth watered and his ass began lubricating in excitement. He took the huge cock in his hands and began stroking it, drops of precum lubricating his strokes as Dave moaned in pleasure. Andy wanted to taste the huge piece, but his ass demanded ached for attention.
Pulling down his boxers, Andy looked up at Dave with pleading eyes and asked "fuck my pregnant hole?"
Dave's eyes widened in excitement, and a hint of nervousness, before asking: "is it... okay for the baby?"
"Oh yes, I think it's very good for it!" Andy replied, laying onto his back.
"Do you have any lube?" Dave asked. "I know women sometimes say it's too thick to take without... "
Andy brought Dave's hand to his hole, who reacted with pleasant surprise, "and here I thought girls got wet!"
Dave lined his thick cock up at Andy's entrance and gave it a light push. Andy's ass seemed to suck him, the head of his dick easing in. Andy squirmed with pleasure as the huge cock started filling him up.
"Oh fuck yes," Andy said, arching his back to take as much as possible. As Dave started thrusting, Andy felt his stomach and tits bouncing and his own hard cock throbbing.
A cough startled both of them, and they turned to see Joey dropping his shorts to the floor, 7.5" cock his right hand. Well, mostly in his right hand. It seemed to have the girth of a beer can.
"Forgot about you bro," Dave said, breathing heavily with his cock buried in Andy's ass. "My bad."
"As long as I get a turn, I suppose it's okay," Joey smirked.
Andy signaled for Joey to get closer, taking as much of Joey's cock in his mouth as he could. The thickness stretched his mouth to soreness. It was hard to get a good rhythm going with Dave's aggressive pounding bouncing Andy's body.
Andy's tried to shout "oh fuck" as his orgasm approached, but his mouth was too full of Joey's cock. Throbbing visibly, Andy's cock shot cum straight up before it fell down on his pregnant belly. Several spurts continued like that as Dave's face contorted with his own approaching orgasm.
"Where should I cum?" Dave panted.
"As deep inside me as you can!" Andy groaned.
A few more thrusts and Dave was growling like an animal as he pushed deep into Andy's gut and unleashed a torrent of cum that seemed to warm Andy from the inside.
Dave pulled out, panting, and Joey slipped out of Andy's mouth and got in position. Joey's cock was thicker than any Andy had taken before, and Andy was mildly nervous.
"I'll go slow," Joey said, reading Andy's mind.
Joey's cock head pressed at the entrance to Andy's hole, which stretched to its limits to accommodate. Andy gripped the sheets as his body adjusted. After a few deep breaths, Andy signaled for Joey to go deeper, feeding him another inch. Andy felt like he might be split it two, but the sensation became more pleasurable after a minute.
Slowly, Joey managed to get himself all the way inside Andy's ass, Andy's own lubrication mixing with Dave's cum. With surprising tenderness for the big hulk of a man Joey was, he gently began to fuck the pregnant breeder. Andy felt like he had a second baby inside him with Joey's cock.
Joey began picking up the pace, not matching Dave's frantic thrusts, but giving Andy a solid pounding. Then Joey bent over to grab Andy's breasts, pinching the nipples and sending Andy into his second orgasm. The cum flew out of his cock and hit Joey in the chest again and again, but Joey just smiled and kept fucking him.
"Should I add my load to the mix?" Joey said, sweat dripping down his face.
"Please!" begged Andy.
With that, Joey picked up the pace until his cum started spurting in Andy's ass. As Joey's orgasm started to subside, he leaned over and kissed the space between Andy's breasts.
"Fuck that was good," Joey said when he finally calmed down and pulled his softening cock out of Andy.
