Chapter 2

She'd agreed to getting naked for two reasons. First, the thought of it made that pressure flood into her chest, and her nipples started tingling. Second, she thought about how they'd swum topless all those times. This would probably bee pretty much the same.

It wasn't the same at all, though.

She watched him watch her, noting his wild eyes as she took her top off first. His tongue almost fell out of his head as he stared at her breasts and, for the first time, all the tingles in her nipples seemed to spread until she was tingling between her legs too.

Then he started taking his clothes off too.

"What are you doing?" she asked, her thumbs in the waistband of her panties.

"I'm gonna have to do it too," he panted. "There is no way in the world that I can watch you do this and not do it too."

"Oh."

She finally got to see what made that huge tent in the front of his PJs that night. It had the peculiar effect that a cobra has on some people. It was beautiful and fascinating to look at, but it also scared her half to death. His hand grasped it, though, and began to stroke up and down. He was clearly in control of this beast, and she relaxed.

"What do I do?" she asked, eager to do something.

"I can do this standing up, but you should probably lie down," he panted.

She did and then had to work up the courage to spread her legs as he got into position to see. When she finally got her knees apart, the look on his face made her legs feel weak and they just splayed open limply. There was adoration in his eyes.

"Oh wow," he sighed as he got his first look at a pair of real live pussy lips. Hers looked different and similar at the same time, compared to those he'd seen on the internet and in magazines. Hers were closely pressed together and pale. He couldn't see inside her at all and they closed protectively over the area where he knew her clit was. Not thinking about how she might interpret it, he kneed up on the bed, still stroking his prick slowly.

"What are you doing?" she asked. Her voice wavered.

"I'm going to show you," he said, already thinking that he was going to get to touch that pussy as he pried those tight lips apart. "I'm going to show you where to rub."

To be honest, things would have stopped right there, had it not been for RD684. Clarissa would have chickened out. But, as the drug was responsible for this whole episode in the first place, it was also responsible for Clarissa's decision that letting her brother touch her was no big deal. After all, it was for a good cause. If she didn't find some answer to this jittery feeling, she was going to go crazy.

He had to abandon his penis as he got down on his elbows. She lifted her head to watch as his face and hands got closer and closer. She told him to wait and she reached for a pillow to fold in half and support her head and neck with.

Then, almost in slow motion, his fingers reached for her. His first touch was almost like someone feeling a pan on the stove, to see if it's hot or not. Then, with opposing fingers, he pried her sexual lips open. He started in the middle, and then worked up until the sheath that covered her clitty was exposed. The little organ was apparently hibernating, at the moment.

"See that bump?" he asked, staring at it in wonder.

"Uh huh."

"That's it."

"That little thing?" She sounded almost disappointed. "Why do you get a big long penis and all I get is a little bump?"

"Can I touch it?" he asked.

Clarissa thought it was pretty funny for him to be holding her apart down there and ask if he could touch her, but she gave him the OK.

Within seconds she was delighted that she had. His finger was dry, and so was she, so the skin that he touched and pushed stretched as he pushed his fingertip across that little bump.

"UH!" she gasped explosively as a jolt of pleasure shot through her belly. And all he'd done was just touch it!

Matt was both delighted and curious. He'd forgotten his prick in the fascination of exploring this entirely new kind of thing. His experimentation was really just curious play, a little like finding some strange new bug and poking at it to see what it will do. His fingertip circled the bump. He was rewarded with a sigh. He did that again and her hips started moving up and down.

"They rub it like this," he said, continuing to circle the sheath. Before his eyes it opened, just a slit at first and, amazed, he watched something begin to push out from within. Part of his astonishment was that what pushed out of her body actually looked a lot like the head of a tiny penis. It wasn't hard, though ... not in the sense that his penis got hard. He flicked it sideways and it bent easily.

"HUUUUH!" grunted his sister.

Grinning he started pushing the protrusion this way and that. Her knees bent and she started pushing with her heels, raising her hips as he mauled the little organ. Then, just for fun, he tried to press it back inside. Clarissa whined then and the tone and timber of her whine reminded him that he had a hard dick to stroke.

"Now you rub it," he said, getting to his hands and knees.

Her hand slid into her crotch and one finger found the button immediately. He watched, interestedly, as she did things to it that looked much rougher than anything he'd have contemplated doing. Then he remembered how hard the women in the videos had rubbed. Some of them had even slapped it! He got to his knees and started jerking his cock while she continued.

She got noisy and he could actually see the moisture begin to flood her fingers. He kept telling her what to do, describing what the women on the screen had done. When he told her to slide a finger inside, and she did, his prick erupted. A rope of cum lanced out of his prick and painted the back of her finger as she slid it out and back in. His prick spat again and again, getting her hand messy with his juice. He watched and his balls seemed to twist as he saw his white spunk being pressed into her pussy.

She began using three fingers, flat, whipping them back and forth across the bud, violently. She gasped that something was happening that felt scary but good. He told her that was OK and to keep going.

Her scream of completion almost got him hard again. He couldn't tell if she was crying or laughing, though, and he remembered how scared he'd been the first time this had happened to him. So he collapsed beside her and pulled her into a tight hug. The feel of her naked skin against his was fabulous, but it was just a side effect. What he was doing was just hugging her. She hugged him back as she calmed down and caught her breath.

It was quiet for a long time until her breathing returned to normal. They just held each other.

"Better now?" he asked softly.

"You have noooooo idea," she sighed.

"Yes I do."

Her head moved and she stared at him, almost nose to nose.

"I guess maybe you do."

Then, for no reason, and every reason, Clarissa kissed her brother on the lips.

Twenty-five or thirty kisses later, nature and RD684 resulted in Matt squirming on top of his sister while they each tried to push each other's tongues back in their mouths. Her legs were spread and it was all fairly innocent at first. It just felt good to rub their genitals together.

Then the tip of his prick caught in her virgin opening. He shifted sideways and it came out, but it got caught again. The fourth time it got caught, he pushed with his arms, until he could stare at Clarissa's face.

No words were spoken. They stared at each other as he pushed ... just a little. Her calm eyes just gazed into his, so he pushed ... just a little more. Her eyes widened when the head of his prick popped inside her stretched labia, but she didn't tell him to stop. When his prick was halfway in, she took her lower lip between pearly white teeth and bit it gently.

This was, of course, new territory for both of them. For Matt it was surreal as he slowly pushed deeper and deeper, feeling like he might go in forever. When the wisps of his dark brown pubic hair mingled with her lighter fluff, his inclination was to keep pushing, because he WANTED to go in forever. For Clarissa, the feeling of something hot and hard spreading her apart was a mingling of pain, from which fear bubbled up, and an incredible sense of well being, which shushed the fear and only anticipated being even more full.

Then, when he was in as deep as he could go, and KEPT pushing, the little swollen organ she had so recently discovered, seemed to sing a note that vibrated throughout her body. At that instant, she knew this was meant to be. It was perfect, and her joy exploded as a surprisingly calm orgasm just shivered through her body.

"Ohhhh yesssss," she moaned. "Matty, I love you so much."

It was a surprisingly tender moment for Matt too. All the fucking he'd seen in his secretly watched videos had looked violent and forceful, with people screaming and bodies flailing. He could not have been prepared for how intimate this was ... for the feeling that he had somehow become part of his sister's body, and she his. And her confession of love came at the precise time that he realized what a precious thing she had let him do. He would forever be thankful to her for that gift, and emotion surged out of him too. It wasn't in words, though. He simply dripped hot tears of happiness on her cheeks.

Then her body took over, trying to extend that luscious gentle climax, and her hips arched. Matt reacted by rising with her, just as she fell back. It pulled half his prick from her molten sheath. Her hips rose again as he corrected and moved down and ... just like that ... they learned the ancient dance of the two backed beast.

What had been sweet, slow lovemaking, took on an urgency until, if he'd been able to think about it, Matt would have said looked exactly like what he'd seen on the internet. Within a minute he was lunging into her and she was slamming her loins up to meet each lunge, panting "Yes!" over and over, hoping it would never stop.

It had to, though, because Matt was on overload. His body ached to breed and he wasn't in control of it in any way, shape, or form. His hot jets of semen began while he was still lunging, and the first three jets coated her entire vaginal tube before instinct made him slam forward and freeze as his body pumped four more thick streams of baby makers against her cervical mouth.

Clarissa's initial cum HAD been extended as he began to move in and out of her. She'd felt like there might be another one out there and had been trying hard to find it. She hadn't yet, when his croaking cry of completion told her something important was going on. Then, it didn't matter, because she watched his face twist into a grimace that could only be agony, except that his groans were undeniably joyous. He looked like he was dying as she felt that beautiful penis buck and jerk inside her and the hot, wet ball of fire enter her core and begin to expand.

She could have cared less that she didn't cum again, because watching Matt cum was just ... well ... almost as good.

The aftermath wasn't strained or sad in any way. Both teens had recognized how very special this kind of relationship was and it was impossible for either of them to perceive it was being harmful. Something that beautiful just couldn't be bad.

There was some kissing, but few words as they caught their breath and Matt lay on top of her. He asked if he was heavy and she said he wasn't. Both knew the other was OK. And both knew they'd do this again.

"I can't believe I'm hungry," said Clarissa suddenly.

"We just used a lot of energy," said her brother.

They got up and put on their sleep wear before going to the kitchen for a snack. While Clarissa made peanut butter sandwiches, Matt munched on four more candies. He unwrapped another one and put it between her teeth.

Ten minutes later, an observer would have seen two teens, watching TV, dressed for bed, and wouldn't have been able to see anything unusual about them at all.

If the observer would have stuck around another ten minutes, though, it would have been more interesting.

"Did Uncle Bob say when he was going to be home?" asked Matt. Clarissa had taken their uncle's earlier phone call.

"He just said not to wait up for him," she answered. "Why?"

He looked at her with no trace of embarrassment. "I have another boner."

Bob sighed as he got out of the car. It was late and all the lights were off, so he was trying to be quiet. He was tired. He'd be glad when the RD684 trials were over and the data sent to the FDA. He felt bad because he had been spending so much time with work related issues that he felt like he'd abandoned his niece and nephew.

He knew they were OK. Both were smart kids and they understood about his work, but he still felt bad for not spending more time with them.

He stopped at Clarissa's room to look in on her. The light from the hallway into her darkened room showed that her bed was empty. That was strange. There had been no lights on at all when he got home.

He backtracked to the living room, thinking she might have fallen asleep on the couch, but she wasn't there either. He looked at the dry erase board on the refrigerator, but there was no note about a sleepover at one of her friends' houses.

A little worried now, he went back to the hallway and pushed open Matt's door. He was frozen in place by what he saw.

Matt and Clarissa, like newlyweds finally allowed to be together all the time, had spent hours in each other's arms, rubbing together as they overdosed on the sex they had just discovered together. Neither had meant to stay naked, and neither had intended that Clarissa stay in her brother's bed, but sexual exhaustion had finally claimed them. What was revealed to their uncle's eyes was the result of that sexual exhaustion, though it was slightly misinterpreted, at first.

Matt was lying beside some girl Bob had never seen before. Bob's mind casually classified her as a cheerleader type, based on the long blond hair, hour glass shape and grapefruit sized breasts. The girl was on her back, with her face turned toward Matt. His arm was thrown across her, his hand resting lightly on her left breast. The room smelled of sex, something Bob hadn't sniffed in more years than he wanted to remember. Even in the dim light admitted by the open door, the gooey mess that was between the girl's legs bore testament to the fact that no protection had been involved in their tryst.

Bob was of two minds. He was surprised that Matt, thin and geeky had managed to score with such a voluptuous young woman. At the same time the fact that, unless the girl was on the pill, they'd had unprotected sex, was worrisome. Matt should be smarter than that.

The girl moved and her face turned away from Matt and toward Bob. Bob started to duck back, in case she opened her eyes, and then froze again as his tired mind registered the fact that this was no strange girl.

It was Clarissa!

He stared, in shock. Where was the skinny little girl he knew so well? When had she matured to much? And what was she doing in bed with her brother?!

Bob's mind, already tired, almost shut down under the visual assault. His neglect of them had driven them to this. Less than popular geeks, with not many friends and nothing to do on date night, they had depended on him to entertain them. In his recent absence they had found ... other entertainment.

He didn't know what to do. He could wake them up, but there would be yelling and nothing could be solved. It was already too late for that. He knew what he was SUPPOSED to think about this incestuous coupling, but he didn't feel that way. He wasn't sure how he DID feel, but he wasn't disgusted.

He realized that his eyes were still moving from her breast to her sperm-filled pussy and back again. His own dick was as hard as stone.

He didn't know how to feel about that either.

In the end he left them there. He left the door open, so they'd know he'd seen them. Then he went to bed. He had to jack off before he could get to sleep. Visions of Clarissa's pussy, overflowing with her brother's seed, danced in his head. As he came, he felt guilty that he wished he was adding to Matt's offering of love to the girl.

Clarissa woke and realized what had happened. She sat up suddenly and looked at the door. What her uncle had wanted to happen did. She knew that they had been seen, here in bed together. She shook Matt violently.