Ecstasy Island/The Kensington Family/2

Alex sullenly walked back to the left hut on the path behind the waterfall. Here I am in a tropical paradise, he thought, and I have to be stuck with my family of all things...with no television or internet. How could anything so right be so wrong at the same time? I should be on the beach checking out the guys- girls, girls! Checking out the girls. Instead I'm stuck sharing a hut with my little sister.

At that moment, he passed by the bathroom window. Why the bathroom had a window facing the waterfall was beyond him. The water from the falls blocked him from view from the bathroom, but he was close enough to the water to see right through it. Marci was sitting on the edge of the bathtub, naked, playing with herself. She might be his little sister, but this was the first time he had seen a girl masturbate in real life. She had been flashing her ass at him earlier, and now here she was jilling off right in front of him. He couldn't help but to stop and watch...after all, she couldn't see him, right?

She seemed rather practiced at it as she rubbed her glistening little nub. "We shouldn't be doing this," she said softly. "It's not right. What would people say?" Alex was on the verge of panic before he realized that she was just acting out a fantasy. "We're family," she continued, "we're not supposed to do this kind of stuff." Alex was completely taken aback. He never imagined that Marci thought of their dad like that. "Alex, that feels so good," she said, "but don't cum inside. You could get me pregnant." Alex jumped a bit in surprise. She was fantasizing...about him? He felt his cock grow instantly hard. He'd never even thought of Marci that way, even when she made up lies about him doing stuff with her. Maybe they weren't lies though. Maybe they were suggestions? "What did you do, Alex?" she asked softly. "You can't shoot your baby batter into your own sister. I'll get pregnant. Are you trying to knock me up? You are, aren't you?" She started to writhe on the tub as her orgasm hit her hard. She spasmed for a bit in the throes of passion.

Alex didn't know what to think. He quietly continued his walk around the path to the front door, wishing that his raging hardon would diminish, or that he had underwear so it wasn't tenting out his nearly see-through light pants. He stopped outside the door, doing everything he could to make his boner go away. he thought about math, sports statistics, and old people fucking. He was going good until the last one. Apparently even old people fucking was arousing to him right now. Eventually, however, his erection did subside, and he was able to enter the hut.

As he walked through the door, he bumped into a table near it. The children's books that were on top of it scattered across the floor. He cursed briefly, then started collecting the books. He picked up the last book, and happened to notice the cover. It was, The Boy Who Cried Wolf. As he looked up from the book, he saw his sister exit the bathroom wearing a dress so light and thin that he could almost make out what was underneath. His erection instantly returned. It was almost like something was trying to tell him...something.

"Oh...my...god," said Marci, "you've got a boner!"

"What?" said Alex sharply as he made a show of putting the books up while willing his erection to go away, "I do not!"

"I saw it!" exclaimed Marci. "You got a boner for your little sister." she smiled, almost laughing. "You sick perv! You want to fuck your ten year old sister!"

"I do not," said Alex defensively. "I'm a teenage boy. We get erections for no reason at all. It doesn't mean I want to...I want to fuck you."

"But you do," she said, "you want to fuck your little sister! I bet you fantasize about fucking me, about filling my little cunt with your incestuous cum...about knocking me up with your incest baby. Does that get you going Alex? Does the thought of impregnating your ten year old sister just make you want to pop off?"

"Shut up you little," Alex said as he grabbed his sister and threw her on the bed.

"Wait, Alex," said Marci as the act seemed to bring her back to reality for a moment, "I didn't mean it. You cant do this."

"I can't do what?" asked Alex as he pulled her dress off of her, exposing her nubile young body to his view. "I can't fuck you like you want. I heard you in the bathroom, Marci. You want me to fuck you." He kept one hand on her shoulder, keeping her in place as he loosened the tie on his pants and pushed them down. His cock sprung from the pants like a cobra striking its prey. Marci couldn't help but to stare at it.

"That isn't going to fit in me!" she exclaimed. "Think about what you're doing, Alex. We can't do this. You're my brother; my blood-related brother. This is actual incest, not that fake stuff from the internet."

"That turns you on, doesn't it, Marci" he said as he rubbed the tip of his cock across her glistening lower lips. "Or would you rather I call you sis? No one really uses that word," he rubbed his cock across her sex a bit faster, "except in incest porn. Do you want me to fuck you sis?"

"No," she said, "I don't...I don't wanna."

"The safe word is hippopotamus," said Alex as he put the head of his cock at her entrance. "All you have to do is say the safe word and I'll stop."

"That's a stupid word," she said, "I'm not saying it. Now stop it!"

"You had your chance," he said as he pushed the head of his cock into his little sister's well lubricated quim. She was very tight, but also very wet. The resistance felt amazing as he pushed into her almost too tight hole. They moaned simultaneously from the pressure.

"You've done it now," she said. "You're going to be in so much trouble. You're fucking your own little sister, you monster. I'm going to tell dad."

Alex began to piston into his sister's damp honeypot while he looked down into her eyes. "He'll never believe you," he said. "You've told him this happened too many times. God, you're tight, sis. I'm gonna blow in no time."

"You can't cum inside," she said frantically, "I'll get pregnant!"

"I don't care," said Alex. "Maybe I want to get my little sister pregnant with my baby."

"I'm serious," she said, "it's not a good time of the month. There's a really good chance I'll actually get pregnant from this!"

Hearing her say that sent Alex suddenly over the edge as he shot surge after serge of incestuous seed into her very fertile womb. He never even thought of his sister sexually; now he was excited about the prospect of getting her pregnant. He wasn't sure what was going on, but he knew he liked how it felt. His erection didn't even subside. He just kept fucking his sister's tight pre-teen twat.

"Oh...my...god," said Marci. "You just came in me, didn't you. You're going to get me pregnant, you idiot." Despite her complaints she was moaning and panting as Alex continued to piston himself into her. "Why are you still fucking me you freak? Do you get off raping your little sister?"

"Yeah," said Alex, "I love raping your slutty little pussy, sis. I love knowing that no matter who you tell, they won't believe you until it's too late. They won't believe you until you have a positive pregnancy test. Even then, they'll probably figure you did it to yourself to get me in trouble. Face it sis, your my little fucktoy from now on...unless you want to say the word."

"It's a stupid word," she said through a moan. "I'm not saying that stupid word!"

As their passion increased, it became too much for them to continue the banter. They devolved into rutting on the bed like animals. The primal urge to breed pushed brother and sister into an incestuous frenzy. Time slipped away from them as the rutted all through the night. Only when the morning sun broke into the room did they come back to their senses.

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