It was Friday night. Mom and Elizabeth were away. Only Mark and his sister were in the house.

Mark was enjoying himself. He was finally watching one of his films in peace. Elizabeth did not taunt him one little bit that night. She dressed down early, into a white flannel nightgown and snuggled up against him. She wore her hair looser than usual and practically bathed herself in her sexist perfume. Mark thought she smelled like powdery roses.

For about a half an hour the two teenagers ground into each other. Elizabeth's aggressiveness surprised Mark. He already sported a boner when she rested her head on his lap and spoke.

"Mark?"

"Yeah?"

"Have you ever kissed a girl?"

"No. You know that."

"Would you like me to teach you how? It is real easy."

"Well, I've seen this movie a few times already, so Okay Sis."

There was no lesson to it. The bother and sister entwined their tongues like serpents and sent their hands roaming all over each other's most private areas. Mark's hand was working its way under her nightgown, up her thigh. When she leaned her head back for his sweet touch, he knew he couldn't make it this easy for her. "Oh, Sis! What have I done?"

In the best dramatic fashion, he ran upstairs into his bedroom. Mark saw his mother's room door close just as he turned the top of the stairs. She must have been watching the make out session. He shut his own door but did not lock it. Then he threw himself face down on the bed.

"Mark?" Elizabeth stood in the hallway.

"Elizabeth?"

She approached, fully intent on seducing him. Master PC or no, Elizabeth York was a girl who got what she wanted, no matter what lie she had to utter. "It's okay, Mark. Bothers and sisters do it all the time, it's perfectly natural."

"Really?" Mark scooted back on the bed, to be in full view of his open closet.

"Really. Besides we love each other, don't we?"

"I guess we do." Mark was having a hard time not laughing. Here was his bitch sister, seducing him, feeding him lines...lines he fed her.

Elizabeth made gentle lies some more. With each deceit, she moved closer and closer to her bother, her intended lover. She figured that if she could touch him again she could drive him nuts enough to finally fuck her. Her big mistake last time was leaving it up to him.

She held his head in both hands and gently kissed him on the lips. Then the tongues wrestled again. This time Elizabeth massaged Mark's crotch, running her hand up and down the shaft. "Does that feel good, Marky?"

"Mmm. Sure does, Sis."

She pulled off his shirt. Then she took a moment to feel his chest. "Gosh, Mark I never knew what a hard body you have. " Mark cold tell she was really getting to look forward to having sex with him.

Then she started to nibble his pecs and six pack then down his chest. He reached behind her, underneath her nightgown and fondled her bare ass a bit. It was a smooth as the finest Italian leather. Elizabeth moaned. Mark decided he liked smooth asses.

Elizabeth lifted up her nightgown, exposing her naked body to her kid brother. She arched her back as a hint he should suck her tits. Mark had never seen a real naked woman before. It was a mystical experience. In awe of his luck, he gently, hesitantly, touched his sister's breast. Elizabeth seemed impatient with his slow advances, so he sucked on a tit. "OW! Not so hard."

He was genuinely embarrassed. "Sorry, Elizabeth."

"Never mind. You are probably hard enough. Elizabeth produced a small square foil pouch. "A condom! I stole it from Suzanne's stash. Take off your shorts and come here." Mark obeyed. Elizabeth frowned like she bit a lemon peel. It was then Mark realized his dick must be small.

She opened the packet and tried to slip it on him. The latex sheath was too loose too stay on. It splatted the floor. "Aw, to hell with it!" Elizabeth threw up her hands and stormed out.

To make matters worse, Mark heard his mother's derisive laughter from the closet hole, just before she blocked it up.

"Shit!" Mark had left Crystal warmed up and went straight Master PC. The first thing he did was summon up himself and digital morpher. He increased his dick size. He remembered from some bawdy stats his gaming friends rolled up that twelve inches was big. So he made it a foot long. His penis became longer but not thicker. It looked like a hot dog. Mark fixed that; he increased the circumference until the entire length of the shaft was as thick as a cucumber.

Then he rewound the moment. He closed his own window and summoned up his, Joanne's and Elizabeth's text boxes. <You will forget all the happened after to the point where Mark dropped his shorts. You will sleepwalk back to exact point in time just before Mark dropped his shorts. You will wake up and resume your life after Mark says, "Resume." And if he says, "pause" you will mindlessly wait for your life to continue until he says, "resume."> SEND

He shut CB's lid. Mark saw his mother remove the plug to the hole in his closet. She had been very clever and cut it just below his hanging snow gear. He wouldn't be able to see it unless he bent down or removed the coats and looked down. And his used those coats only when he went skiing. Elizabeth entered a minute later, sleepwalking. She sat on the edge of the bed and Mark handed her the loose condom.

Staring at Elizabeth there, in a trace, helpless, gave him that unfamiliar sense of power. He could do anything he wanted to her, to his mother, to Suzanne. They would pay for all the pain and humiliation they heaped on him over the years. His cock responded to the masculine thoughts. Blood rushed in to the huge organ, making upright, rigid, like and Egyptian Obelisk. "Resume."

Elizabeth's jaw went slack and Mark swore he heard a gasp from the closet. "Big change from last time." Mark mused.

"My gawd Mark! You are huge!"

"Thanks, Elizabeth."

"This condom will never fit. We will have to wait."

"What!"

"Well, I don't want to get pregnant."

Mark's mind was reeling. The poor boy had a lot to learn about life and women. "But you love me!"

"What has that got to do with anything? I am not getting pregnant. I've got too much to live for. I am disappointed too. Now you'll just have to finger me."

"Finger you? But you love me, aren't you supposed to do the things I like?"

She suddenly grew cold and distant. "I can see that you aren't ready for this yet. When you get horny enough, see me in my room." With that she left. She didn't even pick up the condom. His mother had trouble blocking up the hole.

Mark spent the rest of the night trying to figure out what went wrong. He felt like crying, all this power and he still couldn't get laid. Maybe Suzanne would be better tomorrow.

Saturday

Mark felt the draft again. He was showering. This time, the mysterious intruder shut the door behind her. Elizabeth, Suzanne or Mom, one of them was watching. He began to touch his dick, encouraging his dick to get hard. He reflected that he needed new jeans to accommodate his new monster.

He wanted to show off his new dick but he didn't want to jerk off in front of his watcher. That would be too embarrassing. Finally, it reached its full length. Mark gripped it like a baseball bat and still had room left over. Was that whispering her heard? The door silently opened and shut again. The intruder was gone.

Mother had gone to the movies and Elizabeth had left for her out of town basketball tournament when Mark arrived home from gaming. Only Suzanne was there, she was just unloading some packages. (The girls got their own credit cards while Mark had to earn all his money.)

Suzanne must have spent the day at the beauty parlor too. She had her hair curled and done it up so is fell like a honey waterfall down the back of her head. She was dressed in shorts and a halter-top that barely slung her melons effectively.

"Hello, dear brother." Suzanne hugged him close, giving him a good feel of her two greatest assets. "How about pizza for dinner tonight? My treat." She held up a premium frozen pizza.

Mark retired to the living room. When Suzanne emerged from the kitchen pizza she was carrying the pizza on a tray and a six pack of beer. "Typical. Now I am going to have to get my own drink" Mark thought.

He was just getting up, hen Suzanne offered him on of her beers. Mark was surprised. "Relax. I bought it, so mom doesn't care. Besides you're in high school now, you should know about beer before you go to kegger."

Mark didn't tell her that beer was common at the gaming sessions and the big guys let him try some more than once. Pretending to ignorance, he took a sip, "Not bad." "Is she trying to get me drunk?" He wondered.

They ate and talked like normal brother and sister for once. "I went to the store today."

"I saw the packages. What did you get?"

"Sleepwear."

"All those boxes are pajamas? Mom's gonna be pissed, that's a lot of money."

"You are so silly. We girls don't keep all of them. We just bring them back from the store to try them all on. I am only going to keep one, maybe two if I really can't make up my mind. Tell you what. You want to help me choose? It will be like a fashion show."

"Okay."

The first one she wore was a white lace bikini outfit. The little triangles of fabric barely covered her nipples and her vulva. Suzanne must have shaved her pussy for surely that was her mound he was seeing under the fabric, but no hairs stuck out. Mark sipped on his beer and his jeans grew very uncomfortable. He said he liked it.

"Really. I don't know if it makes my butt look too huge. Does it?" She turned her back to him and bent over.

Now the jeans were downright painful. He excused himself to go to the bathroom. He first went to his room to change into some sweat shorts, then he did go to the bathroom. It took a long time for his erection to allow him to pee.

When he returned to the living room, Suzanne was dressed in a powder blue satin robe that covered her leg only to mid thigh and she had opened another beer for him. He partook of both intoxicants, one he drank with his throat, the other, his eyes. He sat down on the sofa. His dick was getting hard again. "Nice, Sis."

"Well I'm not really going for nice." With thumb and forefinger she undid the sash, allowing both sides of the robe or fall free. Inside, she wore matching lace powder blow panties and an odd top. Two spaghetti strings held up the top. Lace cups cradled her 38D breasts like two akimbo hands. Then the flimsy fabric poured down to just short of the panty line. A dusty rose bow sat between the two tits.

Mark was speechless. He was only aware of his blood pulsing his cock.

"It's called a fly away teddy." She slipped off the robe and hung it over the lounge chair. "See?" She took each side of the bottom of the teddy and pulled it apart, exposing her navel and midriff up to her cleavage. It was quite clear now; the rose ribbon held the two halves of the teddy together.

Elizabeth leaned forward, hanging her succulent melons only and inch from Mark's face. He did not shy away. She could feel his hot breath on her nipples. "See? All one would have to do is pull on the ribbon and it all comes off, my breasts would be free. See? "

Mark wanted to pull it off with his teeth. But when he leaned closer, Suzanne suddenly jumped away, teasing him, "Now let me show you the last one." She skipped up stairs. It was only then that Mark didn't realize he had finished his second beer and had started on his third he was getting quite the buzz on.

The third one was a winner. It was a white cotton chemise the shelved Suzanne's tits nicely and then draped loose to her mid thigh, disguising her prominent buttocks. Suzanne walked down the stairs slowly, showing off her legs, which weren't bad. "Do you like it, brother dear?"

"Oh yeah, Suzanne. Does it come with panties?"

"No. I am quite naked beneath this little drape of fabric. And bit cold. Good lord!" Suzanne stood still in disbelief.

"What?" Mark began to panic. "Not again!" he mentally pleaded.

Suzanne pointed at his thigh. "Is that thing, yours?" Mark's dick, in search of room to grow, had poked more than its head out from his left pants' leg. He rushed it back in. "Yeah. Sorry. It's just too big. I meant to make it smaller but I forgot."

Suzanne didn't pick up on Mark's slip. She thought he meant "flaccid." She sat at his side, smelling of perfume. "It's okay Mark. I just mean, well, not a lot of guys have dicks that big."

Mark tried to pretend he wasn't thrilled that Suzanne, unlike Elizabeth, liked the size of his cock. Suzanne saw through his clumsy lie. "Is that everything? Let's see." With a sudden jerk she wrestled down his shorts, startling the drunken boy. She ended up on her knees in front of him staring at it.

"Wow, Mark that's the biggest dick I've ever seen." Suzanne squirmed; Her snatch was getting hot and wet and the thought of that big cock filling it up to the very brim. Up to now, Suzanne had been using her sex just to get what she wanted, which too often meant that she slept with ugly and tiny men. Now she was going to get what she wanted, a really huge dick between her legs and little brother was going to give it to her.

"You really like it?"

Suzanne shut him up by throwing her arms around him and planting very tender kiss on his lips. Slowly, surely, so as to not startle him, she opened her mouth and let her tongue explore his mouth. He pulled her closer, so she lay on top of him, her flesh-pillows pressed against his muscular chest. "Gosh, he is so strong. When did my baby brother grow up?" Elizabeth felt the familiar burning in her sensitive breasts. They needed attention. She slipped off a halter and lowered her lefty into Mark's eager mouth. He wasn't great at it; his tongue just kind of lay there.

"Let's go to your room." (Elizabeth didn't want to get her sheets sticky) Taking Mark by his hand, she guided him to his room. Elizabeth lay on her back and took the other string off. "Here. Kneel of top of me. Now, scoot up."

In the end, Mark straddled his big sister. He was on his knees and his cock's lay between her breasts, the head almost to her lips. She was exited as she pushed her globes together. Mark moaned with pleasure as he felt her fuzzy tits squeeze his manhood. "Now, move back and forth."

Mark did as big sister instructed. His shaft plunged through the mounds of flesh to his sister's waiting mouth. Between thrusts Elizabeth exclaimed, "This is so cool. No one has been big enough before. Mark felt proud and increased his rhythm. His dick slid between her breasts and his sister sucked his plum-colored head. She rolled her head, made mmmm noises. Mark had gone numb down there, He couldn't feel much but he could feel he was about to come.

Only after a few pumps with his huge dick, Mark came. Small jets of the milky liquid spat on his sister's face and a bit in her mouth.

Instantly, she threw him off. "Why didn't you warn me that you were going to come?"

"I...I.."

Suzanne cut him off. "I hate the taste of that stuff. I hope you didn't stain my new chemise. I'm going to brush my teeth. Good night. " And with that she left.

Mark was stunned. It was all going so well. Master PC had programmed them to love him. But they didn't. Something was wrong. He didn't know what he was doing. He thought about using CB to order her back, but he wasn't in the mood anymore and the beer was making him sleepy.