Terri sat in front of the mirror and dried her hair. She had to rub a clear spot on the foggy mirror from time to time. That's because her brother, Bobby, was still in the shower.

He had been waiting patiently, sitting on the chair at the dressing table when she got finished with her own shower. She'd stepped out naked, glistening with water droplets and his eyes had raked over her, as they always did, as they had for as far back as when she was thirteen and he was twelve.

That's why she stayed in the bathroom and dried her hair, instead of just going to her room and letting it dry on its own.

She was waiting.

Waiting for HIM to get out, dripping wet, so she could rake HER eyes over his naked body.

They'd been doing it for years. They had never done anything else, except look. Once he'd said "We shouldn't be doing this... isn't it incest?"

Terri, being every bit of fourteen years old, and wise beyond all others had sniffed and said "It's only incest if you kiss."

That had been back when the hormones trickled merrily along, through the gentle streams of blood that nourished their bodies. Those hormones visited various places, causing her nipples to pop up, and his cock to fill with blood, and her clitty to itch, and his balls to tighten up. The hormones said "Hi, we came by to visit, isn't life great?" and then went happily on their way to the pancreas or liver or wherever those kinds of things are metabolized out of the body.

But now... now that she was seventeen and he was sixteen... now it was different.

Now great hulking gangs of hormones rode custom Harley hormone hogs, thundering through blood vessels almost incapable of keeping them inside the thin, quaking walls of their arteries and capillaries. These gang-banger hnormones crashed into places their more tender cousins had visited, sweeping in and demanding "I WANT SEX AND I WANT IT NOW!"

When it didn't happen these Testosterone Angels and Estrogen Mammas wreaked havoc, causing nocturnal emissions that left the bed wet, or made his cock leap wildly to diamond hardness, or left her almost incapable of getting through a school day because juices ran down her thighs at the sight of a hot boy. His balls ached and her pussy itched maddeningly.

Bobby got out of the shower. He was dripping wet and hard as stone. Once he had jacked off in the shower, while his sister sat outside, waiting to see him. She DID see the splat of milky white that made an irregular shaped blob on the misty glass door, and watched that blob elongate and begin its slow journey to the bottom of the door. Then he moved and the water glanced off his shoulder and the evidence melted away, leaving her with an empty feeling for some reason. When he'd gotten out his penis hung limp and wrinkled.

"Don't ever do that again!" she yelled, angry that her treat had been withheld from her that night. She loved seeing that diamond hard prick. It made her orgasms much longer and sweeter when she went to bed.

He'd misunderstood, thinking she was grossed out by what he'd done. He was saddened, because, knowing she was out there, HIS fantasy in the shower had been enormously satisfying, and his ejaculation stronger than usual. But he had a good memory too, and often, when he lay in bed at night, he saw himself come up from behind his sister, cup her breasts and then let his cock cum in one of several of her orifices.

Nowadays he always left it nice and hard for her to look at when he came out of the shower. Terri sighed as droplets of water dripped off the tip of his cock.

"Terri?" he said, his voice husky.

"Yes?" she sighed.

"You know I love you." It was a simple statement of fact.

"Of course" she said, looking from his penis to his brown liquid eyes.

"I want to kiss you." In his mind's eye, ever since he had been thirteen, that was what incest was defined as.

"Why?" she said, turning the hair dryer off.

"I don't know. I just want to. I love you."

"You already said that." She stood up. He was still dripping - hadn't even reached for a towel.

"All right" she said.

At first he didn't think he'd heard her correctly.

"What?" he said.

"I said OK, you can kiss me." She stood with her hands at her side, naked, facing her little brother.

"But wouldn't that be incest?" he panted.

"Only if you put your tongue in my mouth." she said, joking.

He didn't take it as a joke, though. He pulled her to him and his lips came down on hers, warm, urgent, needing something, like a vampire who smells blood and... hungers.

She wasn't prepared for the ardor of that kiss. It was the way her boyfriends kissed her, and her response was automatic. She slipped the tip of her tongue out and licked his closed lips. Her tongue tickled his lips open and darted into his mouth.

For Bobby, it was if every nerve in his body had been directly attached to his lips. Her kiss sucked the very energy out of him and her tongue was like a penis, pressing into his virgin mouth.

It was too much for his brain to process.

His prick jerked and belched and his balls emptied themselves gratefully through the tip of his cock.

Terri felt warm liquid hit her right where her sparse covering of blond pubic hairs began. She jerked her face back from his and looked down to see a streak of white leave his penis and hit her again, this time a little higher. Frozen, she watched it drip down toward her sexual opening.

No naked penis had ever been close to that opening, nor had any sperm. Seeing it... knowing what it was... knowing what it could do if it got inside her... these things overwhelmed her as much as her kiss had overwhelmed Bobby. Her hand went to her sperm-matted fur and slid through it, her middle finger finding and pressing her clit. Her other hand came up and fastened to his shoulder as she leaned into him and let her orgasm wash over her.

Weak in the knees, she sat back down in time to see his wilting penis right in front of her eyes as it oozed a long drip of cum that strung down and then finally snapped and dropped to the floor.

Terri looked up at her little brother. He was hyperventilating, his face pale, his eyes wild. "Oh shit, oh shit, oh shit" he moaned. "I didn't mean it... I'm sorry... oh shit." His hands were waving in the air.

Feeling stronger, she stood back up, grabbed his face with one dry hand and one spermy one, and kissed him again. She broke it and said "Calm down. There's no harm done."

"No harm DONE?" he gasped. "NO HARM DONE? WE JUST COMMITED INCEST!" he groaned.

"No... we didn't" she said firmly.

"But you said..."

"I know what I said" she put her finger to his lips - a non spermy finger. "But that wasn't incest." There was question in his eyes and she felt compelled to give him some anchor. "It's only incest if we kiss AND touch each other at the same time, to make that happen... on purpose. Like if I had my hand on it and made it squirt while I kissed you."

Now Bobby wasn't stupid, but you know the old saying: "Any port in a storm." So he decided to accept that definition, because that made him feel better. "so we could do... that... again, and it wouldn't be incest?" he said hopefully. Terri closed her eyes and felt that hot love splashing on her mons again in her mind.

"Yes" she whispered.

Two nights later their parents were working late. Terri stopped by her brother's room. "I'm going to go take a shower." she said.

Without a word he stopped reading, closed his book and followed her to the bathroom. He sat on the toilet seat while she took her clothes off. She ignored him completely, but stretched, putting her arms above her head and leaning back, legs spread. Then she got in the shower. She didn't take long.

Bobby was already naked when she got out, and already erect too. She stood to one side, making him walk between her and the shower stall to get to the door. He had to brush up against her wet body. His eyes turned toward hers and she stared at him, biting her lower lip.

His shower wasn't long either and he was out, standing, facing his sister, who hadn't even sat down. She inched toward him until the tips of her breasts pressed into his chest. "You mustn't touch me anywhere except my shoulders, or back." she whispered.

He nodded and they melted together. His arms were strong and he crushed her against him delightfully. Even though he was a year younger, he was two inches taller. Her face lifted to his and their kiss was electric. His prick slipped between her legs. It was so hard she thought she could sit on it. She closed her legs, trapping it, pressing it against her vulva.

The kiss went on and on and her arms snaked around his back, her hands flowing over the thick muscles bunched there. His hands slid up and down her spine, feeling each dip and swell. He suddenly found his hands full of soft buttocks. At first he thought he shouldn't touch her there, but wasn't that part of her back?

She pushed her butt into his hands and he squeezed, pulling her against him. That felt good on his cock, like his hand did when he slicked it back and forth while he was beating off. She pushed again and he pulled again until he felt that wild stallion feeling of his seed erupting.

Terri felt his hot liquid again, but this time down between her legs, all over her vulva. She squeezed her legs hard as he made a mess between them. She needed her finger again, but this time the finger she slid through all that slippery goo went up inside her as she hooked it and pulled to mash her clit. She exploded and started to go limp.

He held her up by her naked buttocks.

They held each other for a few minutes, and then stepped back.

"I touched your bottom." he hung his head. "I broke the rule and now we did incest."

"No, Bobby." she said soothingly. "It's only incest if you touch me in the front." They needed another shower.

Somehow they both ended up in the shower together, pressed together under the hot water as it beat down on their bodies. Their kisses were hot and passionate. Finally she stood back as far as the walls would allow and reached for the soap. Instead of washing herself, though, she washed him. When she got to his cock it was iron hard again. She squatted, sliding one hand between her legs as she washed his penis with the other hand, sliding it back and forth, squeezing, stroking, pulling. Soon the water had washed off all the lubricating soap.

She stared at the thing in front of her and licked her lips. She knew about girls who put their mouths on these things.

No one would ever know.

She leaned forward and, closing her lips just behind the glans, sucked. Her tongue, not knowing exactly what to do, fluttered and darted around.

"Terri!" her brother gasped.

She pulled off with a plopping sound and looked up. "It's only incest if you cum in my pussy."

Her mouth went back to his prick, seeking, sucking, tasting. With a groan he fed her and she tasted and swallowed, happy, satisfied. Almost.

When they got out she hugged him, both of them still wet and smiled up into his frowning face. "I like your taste."

"We have to be careful" he said, still frowning.

"I know" she said. "We will." She kissed him again. "We just have to be sure it never goes inside my pussy. It isn't incest unless you shoot in my pussy."

"OK" he said. Her body felt so good against his. And what she'd done felt so good too. "Does that mean we can do... that again?"

Her eyes were smoky. "Oh yes, little brother. But first, I want you to taste ME." His eyes widened, and she pulled him from the bathroom. He grabbed a towel on the way and made quick furtive swipes at his skin as she took him to her room... to her bed. She gracefully lay back on it, her legs spread shamelessly. "I need you." she moaned softly. "I'm soooo horny."

He didn't know exactly what to do. First he just stared. He'd never seen a girl's pussy up close like this before. It was all new. It wasn't like pictures at all. Her lips were thicker than he thought they'd be, and at the top of her hole was an almost white knob that stuck up and out like there was something under the skin that was trying to break through. At the bottom of her opening there was a tissue thin piece of skin that went from one side to the other. It looked like a little dam, and behind it her hole was full of clear watery looking fluid. One of her hands came down and her finger rubbed over the bumpy thing at the top. She pulled her knees up further and moaned as her finger pressed that thing. He knew then that he should lick that thing and he leaned in to do just that.