"Hello Jon. I assume you're here for Karyn." Karyn's mom stood in the door way and beckoned him inside. Behind her Jon could see Karyn's dad railing Karyn's older sister, Becca. So much for just giving head. Jon froze at this but on further inspection he was pounding her ass. He assumed that in their family it was acceptable. Becca's moaning assaulted his ears as he entered the room. Karyn's mom grabbed him by the shirt and pushed him on the couch. "Come on Jon, I don't want to wait my turn. I've been hearing them go at it for an hour now. Let me make sure you're man enough for my baby girl." Jon was too stunned to move, but quickly became horny when he smelled her liquid arousal dripping down her thighs. It was like he couldn't help himself. The more he smelled her strong scent, the worse the ache in his pants grew.
I guess that works both ways. He remembered how Zoe acted when she sensed his arousal earlier.
She lifted up her dress and straddled his waist. She fumbled with his pants, growling and licking her lips as she went. Jon found himself lifting her dress off and unsnapping her bra on the front.
I wonder how popular front clasp bras are in this altered reality.
"You've got such a nice color, and so hard. Boys are so full of energy." Finally, his dick was free and she pounded her ass onto his pelvis. His dick was suddenly enveloped inside her moist warm cunt. His youthful dick made it easy for her to impale herself. She ground her ass on his hips as he started to play with her mature breasts. Jon's balls slapped against her middle-aged sexy rippling ass as he thrust up to her sensuous hips. He tweaked and pinched her nipples watching her squeal and squirm on top of him. Jon smiled as he brought her down to him by pulling her by her nipples, catching her into a deep tongued kiss. Her vagina expertly squeezed and pulled his dick inside her. This was unlike anything he had felt before.
She was so experienced that he was immediately cumming into her. Jon tried to pull out but she slammed her hips down in finality, clamping down on his dick harder than he imagined possible. Her arms and legs snaked around him to keep him inside her. Jon could feel her cervix, impossibly creamy and slippery-soft, and it felt amazing against his glans. He continued to cum, renewed from her clasp on his dick into an immediate secondary orgasm, which perplexed him. Jon had never been able to recover as quickly as this before, let alone cum as much as he was spewing inside her. With Zoe he couldn’t tell the amount of his fluids, but with Mrs. Black he could tell by how his own cum was completely surrounding his dick inside her. He just kept cumming and flooding her insides with his seed. He continued pumping into her, the pressure inside her continued to build and squeezed his dick as the amount of liquid increased. Soon Jon finished his third orgasm inside her, this one was the shortest at only two minutes. He watched as she hopped off him. Her vagina, to his wonderment, closed tightly as his head left it. The only cum he could see come out of her were the strings attached to his cock and balls. She didn't appear to be straining or focusing to do this, instead she seemed spent and casually watching her daughter and husband go at it. She was humming and slowly tracing her slightly bulging stomach.
Did I...? How can I even produce that much baby batter? She's inflated He was shocked, and a little scared. He noted bottles of water lying around, and no wonder. If these three had been going at this for an hour they would need to keep hydrated. He claimed one as he surveyed the damp, sticky carpet of the living room.
"Oh, Jon. I forgot to ask. Did you need something, or are you visiting Karyn?" Mrs. Black seemed to recover from her post coital position on the couch.
"Yeah, I was hoping to spend the night, actually." Jon untangled their legs.
"Don’t let me stop you two from making me some grandkids." She was practically cheering Jon on. "Don't worry about the noise tonight, I don't think we can stop ourselves either. Must be mating week." Jon instinctively knew that it was a random week a year that people living under the same roof were horny all the time. In school he remembered hormones people transmitted made it so that people enter the first day together, bringing each other into their first day too. They must have started their first day. He already spent too long in a room with three of them transmitting the hormone to him to not have entered mating week. He looked down and noted that his penis refused to deflate.
"Um, yes Mrs. Black." Jon gave in to the idea of him being a slut for the next week. Nothing he could do about it.
"Pff. You can call me mommy if you want." She winked seductively at Jon. They could smell each other's arousal. "You two can stop by the main bedroom tonight for some fun. Harry and I can give you some pointers. Hell, if you can give Karyn a half-sister we'd appreciate it."
"I'll mention the offer to Karyn." Jon nervously said as he twirled around to go to Karyn's room. He could hear Mrs. Black sigh and feel her eyes on his ass as he walked away.
"See you later Jon." Mr. Black waved as he was still thrusting into Karyn's older sister.
"Aw, do you really have to go?" Becca moaned out to Jon.
