Zack, of course

Monica stepped quietly along the cabin hallway. The first door she approach was quiet and she peeked in slowly. Empty. The next room proved much more exciting. She could hear the moans even before she opened the door. Inside she spied her prize. Zack lay on a bed with his eyes closed. Chloe was astride him, happily bouncing up and down on his cock. Monica looked a little closer and smirked. Zack's cock was sliding in and out of Chloe's ass. Caught up in their own pleasure, neither of the teens had noticed her entrance. Monica quietly shut the door and began stripping off her clothes.

Chloe moaned. She loved how Zack's cock stretched her tight ass. Vaginal sex was good, but she'd always be an anal girl. A pair of hands came up from behind her and Chloe moaned. One of the hands went to her breast and tweaked her nipple while the other snaked down to her pussy and began rubbing her clit. She could feel breasts pressed against her back and turned to see who had joined them, but the mysterious girl started nibbling on her neck and all she could see was dark hair. "Heather?" Chloe was surprised, but the finger on her clit wasn't stopping and she closed her eyes. Fuck it.

Zack felt the weight settle onto his legs and opened his own eyes. He looked to Chloe, worried about her reaction to someone joining them after all their discussion earlier, but she was blissfully leaning back against...AGAINST HIS MOTHER. "Mom?" Zack managed a hoarse question. He stopped thrusting into Chloe, but she continued to ride him, lost in her own pleasure.

Monica smiled at her son and whispered into Chloe's ear, "You're even sexier with my son's cock up your ass, dear." Her finger mashed down on Chloe's clit.

Chloe's eyes fluttered open as her brain finally processed what people had said, but Monica's fingers had finished what Zack's cock started. She slammed her ass down on his cock and came, squirting all over Monica's hand. Monica pressed her lips to Chloe's mouth, preventing any questions. Zack was frozen, trying to comprehend the fact that his mother was making out with his girlfriend on top of him. Chloe's eyes went wide as she pulled away from the kiss.

"Mrs. Bishop what are..." Chloe started to ask but was interrupted as Monica stuck her finger into her mouth.

"Have you ever tasted yourself, Chloe?" Monica purred. "Has Zack?"

Chloe found herself nodding and sucking on Monica's finger. Monica's other hand was still massaging her breast and Zack was still hard inside of her.

Monica looked at her son. "Tell me what you love most about her. She's quite lovely, but if I had to pick one thing I think I'd go with her hair."

Zack finally fought through his confusion. "Mom, what...what are you doing here? Why are you naked?"

"I should think that's obvious, son." She pulled her finger out of Chloe's mouth and resumed teasing her clit. "I've come to have a threesome with my son and his girlfriend."

Chloe moaned as Monica teased her and Zack tried to shift himself but he was caught under both ladies. "But I'm your son. What...what about Dad?"

"I'm sure your father will be quite aroused when I tell him I slept with our son and the cute little red head that comes over to our house." Monica smiled as she felt Chloe unconsciously start to slowly grind on Zack's cock again. "He'll probably fuck me hard and imagine he's actually fucking, Chloe."

Chloe moaned. She couldn't help herself. Zack's mom knew exactly where to touch her and Zack's cock was still filling her ass. She could feel it twitching each time his mom spoke. This is so wrong. Why does it feel so good?

"You and Dad..." Zack's mouth hung open, unable to finish the question.

"Have a very open relationship. Now be a good dear and help me get Chloe off." Monica nibbled on the teen's neck again, causing her to bounce faster on Zack's cock. "The night isn't getting any younger and I want a shot at your cock."

Zack started thrusting again. He was in a threesome with his girlfriend and his mother. I must have fallen asleep. This is just and erotic dream. Chloe cried out again and fell forward. Her breasts pressed into his chest and she kissed him. Zack felt a mouth close around his balls and he broke the kiss to glance over Chloe's shoulder. His mom was lying between his legs and sucking on his balls. It was too much. He grunted and came inside Chloe's ass. She sighed happily into his chest.

Chloe rolled off Zack as Monica sat back up. Zack finally got a good look at his mom's body and had to admit, she was pretty hot. Her large breasts still retained some perk to them, though age was definitely pulling them down. And the way she smiled was delightfully erotic. Chloe also seemed lost in the sight of Monica.

The older woman was eyeing Zack's softening cock. "Well that won't do. I guess we'll have to find a way to recharge him." Monica smirked and climbed over to Chloe. She swung her leg over Chloe's chest and lowered her pussy before Chloe could react. She then spread the teen's legs and leaned down to begin licking her pussy.

Zack lay next to the two ladies and watched in awe. He'd fantasized about his mom once or twice. His friends all commented on how much of a MILF she was. What boy wouldn't think about such things from time to time. But now she was here. Now it was real. AND she was in a sixty-nine with his girlfriend. Zack felt himself starting to grow hard again. He grabbed a discarded t-shirt and wiped his cock off while his mom and Chloe went at each other's pussy.

Monica sighed. Chloe was doing a decent job on her pussy, but she wanted more. She wanted Zack's cock. She looked up from Chloe's pussy and saw Zack stroking himself. He looked to be a little bigger than his father, which was a nice bonus. Her eyes locked with Zack and she smiled sultrily. "Are you thinking about shoving that fat cock inside your mother's pussy?" Zack could only nod. Monica slid off Chloe and repositioned herself over her son. Chloe and Zack both stared as she lowered herself onto her son's cock. "Mmmm...."

Zack moaned as he entered his mom. She was incredibly wet and not as tight as Chloe or Ashley, but still very pleasurable. She put her hands on his chest once he was fully inside of her and looked at him with a smirk. Suddenly her pussy clenched around his cock. He gasped and the pressure went away. Monica's pussy clenched again and Zack looked at his mom in wonder.

"Kegel exercises," Monica explained.

"What?" Chloe had slipped a hand down to her own pussy as she watched the incestuous sight before her.

"She's squeezing her pussy around my cock," Zack panted.

Monica smirked as she began to slide up and down her son's cock. She continued to periodically tighten her muscles, causing Zack to squirm in pleasure. She eyed the red head fingering herself next to them. "Chloe, don't do that yourself. Let Zack take care of you."

Chloe obeyed the older woman and climbed over Zack's mouth. Monica smirked at her and she bit her lip as Zack began to lick her pussy. She leaned forward moaning and Monica caught her. Their nipples rubbed against each other, sending a shiver through her body that was amplified as Zack sucked on her clit. Monica stopped squeezing Zack's cock and began to ride him hard. She was pleased to feel him thrusting up to meet her. Chloe's eyes were unfocused and she was panting heavily.

Monica whispered into her ear, "do you feel like a naughty little slut, fucking your boyfriend and his mother."

Chloe moaned. "Yesss."

"And whose slut are you?" Monica slowly licked Chloe's collarbone.

"I'm Zack's slut!" Chloe cried out and felt herself cum for the fourth time that night.

Zack had been listening to the exchanged with unbelieving ears. Hearing Chloe call herself his slut was even hotter that having sex with his own mother. He began slamming his hips up into Monica, losing all control of himself.

Monica gasped at the sudden ferocity of Zack's fucking. "Yes, son, fuck your mommy hard. Make me cum all over my son's cock."

Chloe collapsed next to Zack as her orgasm subsided. She could feel after shocks tingling through her body as she watched Monica ride Zack. The older woman was moaning constantly now and she fell forward, unable to stay upright with how hard Zack was thrusting into her. Chloe smiled to herself. I'm not Zack's only slut though. She was in awe of how fast his cock was sliding in and out of his mom's pussy. Monica cried out in an orgasm and Chloe shuddered, feeling another aftershock roll through her.

Zack's mind had flipped and he was operating purely on primal instinct. He felt his mom cum but kept slamming his cock up into her. He somehow got one of her breasts into his mouth and sucked on the nipple before biting it slightly. His mom screamed his name in his ear, coming a second time. That only spurred him on. At last he felt himself ready to cum. He wrapped his arms around his mom's back and pulled her tight, crushing her massive breasts against his chest. He slammed his cock deep into her pussy and came. He held her like that for a moment as he felt spurt after spurt of his cum empty into her. Finally his mom pressed herself up and slid off of him. Chloe snuggled up to Zack as she watch Monica begin to dress. Zack pulled her close and she sighed.

Zack watched him mom and tried to figure out what to say to her after all that. "So...uh...are you really going to tell Dad about this?"

"Of course, son," Monica pulled her panties back on. She could feel Zack's cum squishing inside of her. "Honesty keeps our marriage strong. We tell each other about all our conquests."

"I think Zack conquered you there at the end," Chloe surprised herself by challenging Monica. "I think you're his slut too."

Monica chuckled to herself. The girl has some spark to her. "No, I'm definitely Gregory's slut. But that doesn't mean we won't be doing this again some time." She finished dressing and leaned down to give both teens a quick peck on the forehead. "Now you two get some sleep. I look forward to hearing all about your sexual exploits up here the next time we have dinner together." She slipped out of the room just as quietly as she'd entered.

"Did that really just happen?" Zack stared at the door his mom had just closed.

"I think it did," Chloe snuggled closer and wrapped one of her legs around him.

"And you're okay with it?" Zack turned his head to look at Chloe.

"I'm not the one who fucked his own mother, Bishop," Chloe stuck her tongue out at him before kissing him passionately. She ended the kiss and tried to make her voice as sultry as Monica's. "And yes, your naughty slut is okay with it." Zack's cock twitched and he growled, rolling on top of Chloe. She cried in mock fright then moaned as Zack slid into her for another round of fucking.

* * *

Monica made her way towards the car. Her steps were a little wobbly. Zach had really pounded her well. She found Diane asleep in the passenger seat. The blonde had a dreamy look on her face. She sat up startled as Monica closed her car door and started up the engine. "Did you find, Gavin?" Diane blinked as she came awake and then blushed as she thought about the question. Monica smirked at her. "You tell me your secrets and I'll tell you mine. We've got a long drive back to town."