NOTE:
Please read the initial couple chapters to catch up because it'd be more worthwhile to read this in context. This chapter will ramp up the plot (I think it's longer as a result). I hope fans of the previous two installments don't mind the shift in direction along with the twist!
*****
Ben and his mother continued their incest explosion by fucking five more times throughout the course of the day. They had copulated in the shower, the living room, the backyard hammock, the living room again, and lastly in Kristin's bedroom.
It went without saying that Ben's new sleeping arrangement from now on was going to be with his mother in her bed, as the two were literally inseparable. After the son filled up his mother for the last time before bed, Kristin asked him, "shit honey. What day is it tomorrow?"
Ben answered, "Saturday, the 14th Mommy."
"FUUCK. Your sister just ended school, she'll be home tomorrow," Kristin disappointingly stated.
Ben had seen his sister Kaylee very sparingly since she left for college (which was out of state). She was 1 year older than him, and was doing well for herself apparently. His sister luckily didn't have to be a part of all the household drama like he did, because she spent most of the time away at school.
Ben asked, "why can't she stay with dad?"
The mother replied, "because that asshole is always away on business."
Ben immediately shot back, "but Mommy, how will we fuck all summer?"
Kristin responded, "I've done a lot of thinking sweetie. I know it'll sound utterly insane, but bear with me: we're going to break your sister to the point that she becomes an incestuous whore."
She continued, "I have a rare drug in the kitchen cabinet that I'll give to Kaylee. There's a couple side effects to it: one is that she'll be really horny to the extent that she'll want to masturbate all day. The other is that she'll be so horny, that it'll start dictating the way she thinks. It won't alter her intelligence, but that will take a backseat to her wanting to cum all the time."
Ben couldn't believe his ears. He really had to process this newfound information. He asked, "Mom. Do you use this drug?"
She honestly replied..."I only took it once, and it's the greatest decision I've ever made. You see, I had signed up to test non-FDA approved products for my depression. Then I stumbled upon this one. I'm now the happiest I've been in my whole life because using it has transformed me into a huge slut. I needed to get my boob job sweetie, so that my body could accurately portray how I now feel on the inside."
This all now started to make sense to Ben. He followed up, "have you given this drug to me?! If so, I can't really complain because I'm now also the happiest I've ever been."
"No," Kristin truthfully answered. "You just really like to fuck Mommy."
The two grinned uncontrollably at the bluntness of her comment.
Ben then got at the root to what she was proposing. "Do you think it's fair to give Kaylee this major a drug without her permission? How will she go back to school in the fall and go about her life after you've transformed her into a cum-whore? I'd feel guilty about it to be honest."
Kristin's rebuttal was, "I'm her mother Ben. I've thought about this for weeks, and I'd never make a decision for her that would have adverse consequences. You'll see for yourself how happy she'll be once she's riding your cock. Your sister won't want to go back to school either, if anything she'll want to get fucked for a living."
That was a great career option in Ben's opinion, but he wasn't yet comfortable with the plan. He voiced another concern saying, "another reservation I'm having is that I've never thought of Kaylee in a sexual way. I know she's very pretty and that my friends always tease me about her. But, we've always had a normal brother/sister relationship."
Kristin shot back, "we used to have a normal mother/son relationship too Ben. Then you started to fuck my cunt anytime you felt like it."
Ben said, "that's different though. I didn't have this intense lust for you Mom until you transformed yourself into this completely different person. You became such a pathetic slut, that I knew I had to cum inside your pussy endlessly. Now I can't help it. I'm addicted to fucking you. I just can't imagine having that relationship with anyone else."
"The same scenario you just described about me, will be the case with your sister," Kristin reminded him. "You'll have two desperately horny incest-sluts who'll want you to fuck the living hell out of their cunts at all hours of the day."
Ben was hanging onto his mother's every word.
"I almost omitted the best part too", Kristin continued. "Your sister is having quite the late growth spurt. She called me on the phone a couple months ago, crying hysterically about the fact that none of her bras fit her anymore. She's an inch shorter than me, so there's something to be said about a 5'3 teen who's now walking around with natural DD's. I wouldn't be surprised if her boobs continued to get bigger in the meantime."
Ben had nothing to say now, as drool could be seen coming from his mouth. He must not have noticed this development over the holidays, as Kaylee only wore big sweaters. The mental image of his innocent sister having no control over her ever-growing tits was a very hot one. He couldn't even fathom how sexy a voluptuous version of his sister would be.
Ben said to his mom, "alright the drug would be cool to use as long as there's no negative side effects. And yeah, I think I want to fuck Kaylee now."
Kristin smiled then answered, "I knew you'd want to sweetie."
She continued, "I'm not sure if this will happen tomorrow though. Your sister is going to be such a goddamn whore, but at the same time it may take her a little while for her to accept that fact. Once she does, that's when we'll drive her wild with our incestuous relationship."
Ben took this time to say, "you're so smart Mommy. I'd nominate you for the Nobel Prize if I could."
The mother laughed, then gave her son a peck on the lips. She told him, "that big boner of yours will get taken care of first thing in the morning." Both drifted off into sleep soon after with their naked bodies pressed together.
Ben didn't mind going to bed horny, because he noticed he was a lucid dreamer whenever it was about something sexual. That night he dreamt about having not one, but two busty sluts he could cum inside without hesitation. There was his mother who was the biggest MILF he'd ever seen (and the love of his life). Then there was his inexplicably busty sister who had just begun infiltrating his sexual thoughts.
*THE NEXT MORNING*
Kristin woke up at 8 am. This morning she decided to throw on a short, slutty nightgown. She nudged her son to wake up soon after and in a gentle motherly tone said, "your sister is going to be home in a few hours, so if you have any use for my warm mommy-cunt then now would be the time."
That got Ben's ears and cock to perk up. He tossed the blanket that was covering him down to around the foot of the bed so that he could show his mother how hard his prick already was. Kristin licked her lips as she started crawling toward him from the end of the bed on all fours.
Ben's eyes went wide when his mommy leaned in to put her mouth on his stiff cock. He was surprised about how skilled she evidently was with giving oral. Even though he knew his mom's secret now, she always had him in disbelief.
Getting his dick sucked was an entirely new sensation to Ben. The sight of his mom enthusiastically blowing him was something to behold, as it showed him how cock-crazed she really was. After a couple minutes, the son couldn't help but to start bucking his hips upward. He pressed his mother's head further down so that he could fuck her mouth. Ben was extremely eager to see her swallow his fuck milk.
Kristin knew her son was about to burst, but she continued her steady pace so that he could be sucked dry. Ben didn't bother to warn her, he just held her head still as he shot ropes of cock cream into her mouth-hole. The mother didn't miss a drop.
She loved the look on her son's face during his orgasms. That's how Kristin knew she was being a really good mommy to him. "Your loads are so damn yummy sweetie. They're very nutritious too," the mother commented.
"I'm glad to provide you with the essential nutrients you need Mommy," said Ben.
They weren't done that morning, because Kristin's helpless pussy still begged to be fucked. She immediately adjusted her position so that she could plop herself onto her son's cock before it softened. This allowed the two to stall for a bit, as there was no way her son would go flaccid while inside his mommy. Kristin did realize that she'd have to get his imagination to go wild so that he'd be able to go another round this quickly.
She started working her gutter mouth saying, "I really don't think mommies are supposed to feel this good when they sit on their son's fuck-sticks. Is there something wrong with me sweetie?"
Ben replied, "if there is then there's something wrong with me too. Because it feels soooo good Mommy when I blast my hot loads into your sopping wet cunt."
Kristin said, "then it's settled. We were meant to fuck each other profusely. Please proceed."
Her hips started to gyrate on her son's cock, as he started to quickly regain a pressing arousal in his balls.
The mom continued, "what do you think Kaylee will think when she realizes that we sleep in the same bed? 18-year-olds don't share a bed with their mother because they're afraid of the dark or when they have a bad dream you know."
